If you're picky about water, Brita will not cut it in FL. I grew up down there and have never been able to stomach it.I'm really leaning toward shipping water via Amazon Pantry or taking reusable Brita bottles, packing most food, and just buying milk and cream cheese at the resort. The only things is fruit...we eat a lot of it at home and it would be nice to have some for our room. Has anyone traveled with fruit? Or just buy at the resort. $1.49 per banana is steep though!
I've packed bananas in a big tupperwear before. Your MB Box might work for a couple of them.