unless you are getting food from a fast food place, always tip. ppl are still back there getting your food together....and normally it's just one person working the "take out/to go" service as opposed to a billion servers, so it's a busy job in the restaurant. they get more on their pay check than actual servers, but they still should be tipped. i worked to go service, and it sucks to bring out $60 in food and get nothing for it. the difference in to go and sit-down is that you don't get free refills.....that's basically it.
