We went to the Big Island of Hawaii in April. My first stop after leaving the rental car was the Costco. We bought fruit, yogurt, granola, 2 cases of bottled water and a case of Landshark Lager. This hotel did not have a mini bar. It did have a small fridge in the room that we filled up.
We visited Disney World back 12 years ago. We had the cab driver take us to a store to buy similar stuff plus a styrofoam cooler. When we checked out, we gave everything we had left to the family that had just checked in across the hall.
We did the same thing in Grand Cayman.
It is incredible how much you can spend at resorts just drinking. Plus it is really easy to get dehydrated in that hot sun when you are coming from NH.
Sounds like a good plan.
Yes, you have to watch the choices you make concerning drinks, the snack bars, and such.
I try to cut my deserts down to once every other time, or once in three times.