I expect strangers to share with my kid
Didn't you teach them stranger danger? What do you mean by that?
I expect strangers to give my kids candy.
You shouldn't think strangers are going to give things to your kids. You should buy candy for your kids if you want them to have some.
I don't have time for this.
Even if you don't have time, you can easily order candy online and have it shipped right to your door! No time wasted on your part. Strangers have no obligation to treat your kid, and it might even be dangerous because you don't know what they could do to your kid.