One of the stores I use has a check off area where you can state a percentage for a tip. I don't use it and give $5 to delivery person. I haven't quite figured out how to get coupons for my order but they have them. I ordered 4 onion bagels in my last order and they called to ask if one of them could be plain as they ran out of onion. Wow! Now I know to use the check off column for each item where you can indicate a substitution is ok. I sure don't want someone wasting their time about something like that.
With so many stores doing delivery, it pays to check out more than one place, especially if you're not satisfied with one. My orders have been totally accurate so far.