On our most recent trip (June 29 - July 2) we made Italian wraps to take into the parks. We drove so we brought some things and made a quick trip to the grocery store in town before hitting the resort.
It didn't take much time in the morning to make. Salami, ham, provolone, pickles, and baby spinach. Assemble, wrap, and wrap the wrap in saran wrap to keep tight. We brought a small, soft-sided cooler that perfectly fit 3 wraps and 3 bags of chips. We also brought good traveling fruit (like grapes/citrus). We grabbed condiments from the CSs to use for the wraps.
I thought the money savings would be great, but my favorite part was how easy it was to eat when we wanted. It was a fast trip and we only went to DHS and AK. In DHS, we ate while waiting for the Indiana Jones show to start. In AK, we picked a place down by the water in the Flametree BBQ patios. So very handy! I loved not having to stand in line and wait for food.
btw...one reason we picked Italian is because we felt the most comfortable with that meat selection without ice packs, etc. We kept the meats/cheese/spinach in the fridge. The wraps started cold and we still cold when we ate them. No worries.