Hmmm -- execllent question

bring a big cooler for yourself -- lots of water, juice, gatorade, etc.

they now make tuna in foil pouches ( add some condiment sized mayo packs and instant tuna salad!) and chili in little boxes-- both are sealed and need no fridge

beef jerky, hard salami, candy bars, etc

instant oatmeal packets and those mini-cold cereals with powerded milk...

bring extra to trade...

tro