If you are a coffee drinker like DH, bring basket filters and coffee (we buy the disney blend at the resort) and the (disposable) to go coffee cups with lids. Since you are given only one sigle load size of Tide, I always bring my 3 in 1 Purex laundry detergent/sheets. We also have purchased Mickey ice cube trays to bring with us each trip and this last trip we bought the vinylmation ice cube trays that we will continue to bring them back for future trips. We have learned the hard way to always bring tylenol, dayquil, dramamine, allergy meds and that sort of stuff.
You didn't mention what size villa you are staying in. If 1 BR or larger, then you will have a full kitchen with everything you need to cook (except the food!) Plus you have a microwave, dishwasher, and toaster. If you clock on the resorts at the top of this site, you will find loads of info on your room/resort. Have fun!