T.L.
Ok so here is my "redneck" idea for you. LOL Why not take a blow up pool and fill it full of ice for the stuff that has to stay cold? With this idea you could pack plenty of fruit, slaw, potato salad, baked beans (if you like them cold). What about a relish tray? pickles don't have to stay cold. Is there a store close by where you (or someone) could make an ice cream run when it is cake time? Remember cake frosting will melt if it gets too hot as well.