All the info on "real food" choices is great, but with two 14 yr old boys who are ALWAYS hungry, I'm really concerned about snack choices and prices. Are there small shops or kiosks with snack items? If so, are they readily available? We will arrive Saturday, June 5 for five days. I know lockers available. How large are these? Will they hold a small cooler? These boys could bankrupt me if I don't make some plans ahead of time. HELP!