Been so long I forgot about the tent, I thought you were talking about the Sunday morning breakfast.

I've seen some pretty scary mobile vendor vehicles and how the food is handled in them and then some pretty clean ones. There are some key things that I see that either make or break them for me, temperatures cold or hot are very crucial in food handling. Open containers, with food in them and no real temperature controls to keep the foods cold will breed bacteria rather quickly and not achieving the proper cooked temp will only make things worse. Then there's access points a clean tight closed environment which means holes in walls and such where bugs can enter. When I see random holes drilled in the walls of these vans for cords and such those are open invitations for bugs. If you notice even the average motorhome is set up with this in mind.