Truck vs. Trailer ??

Hello everyone, I am glad to have found this forum.

I would like opinions on a concession truck/van vs. a trailer. I would be serving deep fried foods such as mozzarela sticks, onion rings, breaded mushrooms, chicken strips as well as Hot Dogs and Soft Pretzels. Fountain pop, and frozen lemonade. I want to do the fair/festival scene.

I am not looking for anything very large. Do you think it would be more convieient to have a truck so you wouldnt have to hook up or park a trailer? Do fairs generally accept food trucks or is there a rule about it being a trailer only? Thank you for answering my first question of many, Im sure :)