diff --git a/t/12-rakuast/call-method.rakutest b/t/12-rakuast/call-method.rakutest
index a66b2a06cff..f6d54c1ee13 100644
--- a/t/12-rakuast/call-method.rakutest
+++ b/t/12-rakuast/call-method.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 15;
diff --git a/t/12-rakuast/call-name.rakutest b/t/12-rakuast/call-name.rakutest
index ef568270f61..7b29c744efe 100644
--- a/t/12-rakuast/call-name.rakutest
+++ b/t/12-rakuast/call-name.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 8;
diff --git a/t/12-rakuast/circumfix.rakutest b/t/12-rakuast/circumfix.rakutest
index d4be6ce0f6f..47cafb26cdf 100644
--- a/t/12-rakuast/circumfix.rakutest
+++ b/t/12-rakuast/circumfix.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 7;
diff --git a/t/12-rakuast/code.rakutest b/t/12-rakuast/code.rakutest
index d88fb19e0fc..029dd448841 100644
--- a/t/12-rakuast/code.rakutest
+++ b/t/12-rakuast/code.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 12;
diff --git a/t/12-rakuast/contextualizer.rakutest b/t/12-rakuast/contextualizer.rakutest
index a4f397a81a3..e2cc64ec73b 100644
--- a/t/12-rakuast/contextualizer.rakutest
+++ b/t/12-rakuast/contextualizer.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 7;
diff --git a/t/12-rakuast/errors.rakutest b/t/12-rakuast/errors.rakutest
index be611562a69..40a482876b9 100644
--- a/t/12-rakuast/errors.rakutest
+++ b/t/12-rakuast/errors.rakutest
@@ -1,4 +1,4 @@
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 1;
diff --git a/t/12-rakuast/heredocs.rakutest b/t/12-rakuast/heredocs.rakutest
index a6b060b6e1a..21dbde217b5 100644
--- a/t/12-rakuast/heredocs.rakutest
+++ b/t/12-rakuast/heredocs.rakutest
@@ -1,8 +1,7 @@
 # NOTE: if you're adding / adapting tests here, you probably want to do
 #       the same in t/12-rakuast/strings.t
 
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 12;
diff --git a/t/12-rakuast/label.rakutest b/t/12-rakuast/label.rakutest
index dc20141d9be..8234665971b 100644
--- a/t/12-rakuast/label.rakutest
+++ b/t/12-rakuast/label.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 18; # Do not change this file to done-testing
diff --git a/t/12-rakuast/literals.rakutest b/t/12-rakuast/literals.rakutest
index 56e5b2a4432..e15ce99f50c 100644
--- a/t/12-rakuast/literals.rakutest
+++ b/t/12-rakuast/literals.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 9;
diff --git a/t/12-rakuast/meta-operators.rakutest b/t/12-rakuast/meta-operators.rakutest
index 65e8f140153..1d0609b4b38 100644
--- a/t/12-rakuast/meta-operators.rakutest
+++ b/t/12-rakuast/meta-operators.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 5;
diff --git a/t/12-rakuast/name.rakutest b/t/12-rakuast/name.rakutest
index 0de686aa0b8..a531cee4a30 100644
--- a/t/12-rakuast/name.rakutest
+++ b/t/12-rakuast/name.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 6;
diff --git a/t/12-rakuast/nqp.rakutest b/t/12-rakuast/nqp.rakutest
index 649221cd28b..4166e068831 100644
--- a/t/12-rakuast/nqp.rakutest
+++ b/t/12-rakuast/nqp.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 4;
diff --git a/t/12-rakuast/operators.rakutest b/t/12-rakuast/operators.rakutest
index 6d6a03ac51c..e091b8f7c3b 100644
--- a/t/12-rakuast/operators.rakutest
+++ b/t/12-rakuast/operators.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 31;
@@ -375,7 +374,7 @@ subtest 'Multi-dimensional hash indexing' => {
     );
 
     is-deeply $deparsed, '%h{"y"; "a"}', 'deparse';
-    is-deeply $_, (3,), @type[$++]
+    is-deeply $_, 3, @type[$++]
       for EVAL($ast), EVAL($deparsed);
 }
 
diff --git a/t/12-rakuast/origins.rakutest b/t/12-rakuast/origins.rakutest
index 0990d90d682..3b6a539e4b4 100644
--- a/t/12-rakuast/origins.rakutest
+++ b/t/12-rakuast/origins.rakutest
@@ -1,4 +1,4 @@
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use nqp;
 use NQPP6QRegex:from<NQP>;
 use NQPHLL:from<NQP>;
diff --git a/t/12-rakuast/package.rakutest b/t/12-rakuast/package.rakutest
index 99a482dc498..dc0a595c1c2 100644
--- a/t/12-rakuast/package.rakutest
+++ b/t/12-rakuast/package.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 12;
diff --git a/t/12-rakuast/pair.rakutest b/t/12-rakuast/pair.rakutest
index 677947b5b18..be4445028ac 100644
--- a/t/12-rakuast/pair.rakutest
+++ b/t/12-rakuast/pair.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 8;
diff --git a/t/12-rakuast/regex-assertion.rakutest b/t/12-rakuast/regex-assertion.rakutest
index 88b58241824..748d7bb4a2a 100644
--- a/t/12-rakuast/regex-assertion.rakutest
+++ b/t/12-rakuast/regex-assertion.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 25;
diff --git a/t/12-rakuast/regex-charclass.rakutest b/t/12-rakuast/regex-charclass.rakutest
index 6d7a5af83fa..d6348df1060 100644
--- a/t/12-rakuast/regex-charclass.rakutest
+++ b/t/12-rakuast/regex-charclass.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 5;
diff --git a/t/12-rakuast/regex-substitution.rakutest b/t/12-rakuast/regex-substitution.rakutest
index 02ede0939c5..30f3e86cd14 100644
--- a/t/12-rakuast/regex-substitution.rakutest
+++ b/t/12-rakuast/regex-substitution.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 7;
diff --git a/t/12-rakuast/regex.rakutest b/t/12-rakuast/regex.rakutest
index 9c2297497d9..89e4c4ebd86 100644
--- a/t/12-rakuast/regex.rakutest
+++ b/t/12-rakuast/regex.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 55;
diff --git a/t/12-rakuast/signature.rakutest b/t/12-rakuast/signature.rakutest
index b4fb501a7bb..a035fd22b86 100644
--- a/t/12-rakuast/signature.rakutest
+++ b/t/12-rakuast/signature.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 15;
diff --git a/t/12-rakuast/statement-mods.rakutest b/t/12-rakuast/statement-mods.rakutest
index 3330d576371..c78dd0b7c93 100644
--- a/t/12-rakuast/statement-mods.rakutest
+++ b/t/12-rakuast/statement-mods.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 14;
diff --git a/t/12-rakuast/statement-phaser.rakutest b/t/12-rakuast/statement-phaser.rakutest
index 626e2fb5919..1c3acf91e94 100644
--- a/t/12-rakuast/statement-phaser.rakutest
+++ b/t/12-rakuast/statement-phaser.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 32; # Do not change this file to done-testing
diff --git a/t/12-rakuast/statement-prefix.rakutest b/t/12-rakuast/statement-prefix.rakutest
index 0f9b5bc76bb..787fd3df847 100644
--- a/t/12-rakuast/statement-prefix.rakutest
+++ b/t/12-rakuast/statement-prefix.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 14;
diff --git a/t/12-rakuast/statement.rakutest b/t/12-rakuast/statement.rakutest
index 55390b2e340..f8effcb7a1e 100644
--- a/t/12-rakuast/statement.rakutest
+++ b/t/12-rakuast/statement.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 27; # Do not change this file to done-testing
diff --git a/t/12-rakuast/strings.rakutest b/t/12-rakuast/strings.rakutest
index 7011a9ecc10..4217b21e9fe 100644
--- a/t/12-rakuast/strings.rakutest
+++ b/t/12-rakuast/strings.rakutest
@@ -1,8 +1,7 @@
 # NOTE: if you're adding / adapting tests here, you probably want to do
 #       the same in t/12-rakuast/heredocs.t
 
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 13;
diff --git a/t/12-rakuast/stubs.rakutest b/t/12-rakuast/stubs.rakutest
index c87226dd003..7dfac75762a 100644
--- a/t/12-rakuast/stubs.rakutest
+++ b/t/12-rakuast/stubs.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 6;
diff --git a/t/12-rakuast/subset.rakutest b/t/12-rakuast/subset.rakutest
index 425532f251d..8ac6620943f 100644
--- a/t/12-rakuast/subset.rakutest
+++ b/t/12-rakuast/subset.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 7;
diff --git a/t/12-rakuast/terms.rakutest b/t/12-rakuast/terms.rakutest
index c501ab9e872..c4972966e12 100644
--- a/t/12-rakuast/terms.rakutest
+++ b/t/12-rakuast/terms.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 13;
diff --git a/t/12-rakuast/var.rakutest b/t/12-rakuast/var.rakutest
index 9e12e918259..75ae194f564 100644
--- a/t/12-rakuast/var.rakutest
+++ b/t/12-rakuast/var.rakutest
@@ -1,5 +1,4 @@
-use MONKEY-SEE-NO-EVAL;
-use experimental :rakuast;
+use v6.e.PREVIEW;
 use Test;
 
 plan 46;