Driving a long distance with children is difficult. Driving long distance with food allergic children requires extra packing. We went to have Thanksgiving with our in-laws. We packed everything we were going to cook right down to the margarine. No stopping at restaurants; had to pack everything we were going to eat on the road as well.
We stopped at the same hotel we did last time we traveled to Alabama. Last time though we got McDonald's to eat in the hotel room and on a whim got Chicken Selects which appeared safe instead of our usual plain hamburger. Max threw up in the middle of the night.
Of course this is what he remembers from our last hotel stop. He requested that we bring our food and not buy anything "because, remember, I threw up last time."