We stayed at BWI at the end of April beginning of May and loved it.
Mugs - they have the refillable mugs and they are sold at the Bakery - at least, probably other places too. they are refillable at the Bakery and at the pool bar at the main pool. And you can get coffee at the lounge in the am.
We faced a very pretty fountain near the quiet pool. One afternoon we were at the quiet pool and there was no one - not another single soul - at the pool. There is a hot tub at the quiet pool as well as a hot tub at the main pool. Good for aching feet and calves.
We found the Boardwalk to be very quiet. That is, inside the buildings. We hardly ever ran into someone else in the hallways. I like the way that they set this resort up, so that the general public has not access to the quiet pool area.
The main pool had lots of people around. And the water was much warmer, almost too warm. there was a quieter area - over to the right - but still not like the quiet pools.
The Villas area pool and hot tub is just around the corner from the main pool, unlike the Inn quiet pool. The inn quiet pool is on the opposite side of the resort.
We mostly walked to and from Epcot and MGM. We like the walk to MGM - nice an relaxing and again quiet. If you do not walk, the only other transportation is by water taxi. We did that sometimes, it was good also.
Bus transportation was OK. shared bus with Swan and Dolphin (2 stops) and sometimes but not always with Yatch and Beach Clubs - 1 stop - I think.
Any questions, feel free to ask.