I have eaten sucessfully shirtless at an In-N-Out burger before and I went shirtless 6 times to a McDonalds to get food to go before they asked me to put a shirt on because some girl scout mentioned me to her troop leader and she told the manager. Ive gone shirtless to Carl's Jr before to get food to go. I also went to Del Taco and Burger King. I tried to go to Weinerschnitzel but the manager guy claimed some health inspector guy got on his case for some shirtless guy in his store even though theres no health codes against it, I never got the chance to tell him. Anyways yah most places ive been ive done it sucessfully although besides IN N Out and Carl's Jr ive only gone to these other places shirtless once sucessfully.