I'm going to take advantage of a small loophole when ordering my coffee
For what reason do you need to exploit this?
Life is a make a choice situation, which you will choose for an own financial benefit
As long as you're not doing anything illegal, you should be fine. If there's an error or a loophole in their system, it's their responsibility to correct it.
Typical westerner catch 22 logic. Screw you guys, I'll do it anyway.
I'm just saying it's okay to do something, since it's still legal. But you just have to make sure to not overuse it in case it gets patched up.