We JUST got back and loved it! There are lots of dining options at the Boardwalk... plus you are litterally a stone's throw from four other resorts... for breakfast I'd recommend Spoodles, Boardwalk Bakery, or take the 5 minute walk over to the Yacht and Beach Club -- we did the character breakfast at Cape May Cafe. Since we had a studio, we also did breakfasts in the room (bagels, cereal, etc.) The only downside I saw to the dining was that if it was pouring you had to don your ponchos just to get some food... the upside was that everything was open late when we got back from the parks!
Mugs are available and can be refilled at the bakery and some other locations (sorry I can't help more but we didn't get any mugs). Pool is great (kids loved the slide) but unfortunately I never made it to the quiet pool. If you're in the villas the main pool is very accessible but from the Inn side it's a bit of a walk.
Transportation to MGM and Epcot is great... we actually walked to Epcot rather than wait for the boat most days! Bus stop is right outside the lobby, so very central to the entire resort. You do share a bus with Swan and Dolphin, very rarely with the yacht and beach as well.
That's the quick overview, as I am trying to pry myself away from the keyboards and get to bed! I'll do my best to remember to post our pictures tomorrow (they're stored on the other computer)... Any other questions?