The ones in the non-DVC resorts are smaller than the ones in the DVC studios. The DVC ones are undercounter refrigerators. The others are the cube type refrigerator. About 1/2 the size.
I found a picture of the fridge's found at Riverside, same exact as French Quarter!
(thanks wdwig!)
They may not be as big as the DVC one's, but they are still a really nice size! You can easily fit a few desserts/items in the main part and on the door about 6 sodas/drinks!
It's a great thing to have them because you can save little snacks/leftovers for a few hours and eat them when you get back at the end of the night!
I was able to put 1/2 gallon of milk, jar of jelly, pop, snacks, etc... it was very convenient and saved on some expensive lunches when my DS (5) would prefer PB&J over ANYTHING else...