I am surprised no one had mentioned this, but have you considered shipping your snacks down to the hotel before you leave?? We did this last January. DH works for the "big brown" shipping company so he could tell me exactly how many days in advance to ship my package so that it would arrive the morning of our arrival. I needed to bring along some special foods for DS's food allergies and DH's Atkins diet. It really came in handy. I packed a medium sized box with wheat-free bread, 1 jar of Goober grape, chocolate rice milk(shelf stable), Atkins bars, juice boxes, and other assorted snacks and treats. It all came in handy. I packed my kids fanny pack with a juice box or two and a few snacks every morning. I also carried a few snacks for DH and myself. (But of course, there are times when nothing but a Mickey bar would do!!). I highly recommend that. Any UPS counter can tell you how many days it takes from your area to a certain zipcode. Just be sure to take into account that there is no Saturday or Sunday regular delivery. And call the hotel to be sure it is okay with them and to ask them to have it ready for you when you arrive.
ANOTHER THING..... I had no food packed in my checked luggage, but it got inspected on the return flight. I had food packed in my carry-on for both legs of the trip to FL and back and it go no more than a quick x-ray! So there goes that theory! YES, I packed an entire picnic dinner for my family of 4 for the trip down. I knew we wouldn't have time to eat during our connection in PA and didn't want to end up with a hungry, cranky family. So I packed a great picnic, including soda, juice boxes, etc in a soft-side cooler bag and used it as my carry-on bag. I just made sure that everything was in disposable containers, so I didn't have to worry about carrying dirty tupperware with me!! After we ate I just folded up the cooler bag and put it in my DH's carry-on!...P