This thread is an education! I’ve never had a food delivery so protocol wrt tipping has never crossed my mind. Where we lived previously, there were no deliveries because we were too remote, and I suppose I’ve just never got into the habit.
I’ve noticed that locally people have deliveries at breakfast time from MacDonalds and so on, which does baffle me a bit. How long does it take to boil a kettle for coffee and pour a bowl of cornflakes? Of maybe they’re having Big Macs for breakfast! Our local Costa now delivers coffees to your house, which I also find baffling. I assume they charge more than in their cafes?