Are you supposed to tip the cashier when you call ahead an order takeout? I usually don't, because I didn't dine in the restaurant and have them bring my food and fill my glasses, etc. But you still get the tip blank on the receipt if you pay by card, and I hate having to actually make the decision.
Now, very occasionally, I'll actually walk into a restaurant and order something to go through the hostess. In those cases, I'll tip, and they usually do things like offer to get you a drink while you wait, etc. She is pretty much functioning as a waitress in that respect. I just don't like the idea of having to tip someone for putting food in a box and ringing me up. That's the stuff that should be covered in the price of the food itself.