The CBR room was great, we were there for 2 nights in Dec, but stayed the full time this time around. We were in Jamaica 4540 a corner room near the ice machine on the second floor. Only problems we has were noisy kids on the walkway thinking it was a sprinting track back and forth, back and forth. Walk to food court or busses was about 5 min. The busses were reletivly quick, we had no problems, most we waited was the posted 20 min, but if you expect it, it is not too bad. The food at the court is edible, but not great, did fine for us though, but we did not try Shutters. The pools were nice, and they were just replacing a bunch of plants on the island and painting the playgrounds.
As for the sprinklers, I did see them at downtown disney, epcot, not sure about MK, but they were all running. I did not go to Ariels Grotto, so I cannot answer that question.
I hope this helps.