We are usually there during the off- season, so the hours are perhaps a bit shorter than (or at least, that's what I remember) you have here; the availability of refills is there, but it is certainly different than one of the WDW
DVC resorts in how it's setup. I do miss the 'fill your own mug' setup that SSR has... but it is nice to connect to the CMs and say hello when you get your refill, too. They are really nice to chat with
I'm not sure that we had the CM in the store refill our mugs - I will have to remember that option.