Ask MeCha: If you're going to give someone a gift certificate to a restaurant (let's say a slightly higher-end one that they would not normally splurge on themselves), is it appropriate to include a bit of cash for the tip as well?
→[More:]I don't mean that it would be expected, but would it be rude to do so? Assume that they could afford to tip on their own, but my intent is to treat them to a nice meal and pay for it *all*.