This was my understanding as well. If they just ring up the total and pass you food, there's no expectation of a tip. I do tip from time to time at places wher

This was my understanding as well. If they just ring up the total and pass you food, there's no expectation of a tip. I do tip from time to time at places where I'm a regular customer. If I get takeout somewhere near work of home ~4 times a month I'll drop a dollar in once every couple of trips.