If between now and when you go, you can splurge and get a pizza cooker from
walmart or target, do it. They sometimes will run on sale for $34.99. The cook the pizzas on a circular pattern and do very well. This way, you can bring some of those Tombstone $2.99 cheese pizzas that are frozen and cook them up very nicely and save some buckolas.
Here is the walmart link, but they weren't on sale when I looked, sorry.
http://www.walmart.com/ip/Presto-Pizza-Oven/3218?wmlspartner=GPA&sourceid=44444444440282145369
They are worth every penny if you don't have a convection oven or something else to cook the pizzas in. We bring frozen pizzas every time we go camping. DS loves "cheezy pizza" and it is cheap and fits the bill nicely.
Nachos are overrated