To Buzz'mom-
I'm sure you'll like the hotel. We were a party of 6, Me and DH in separate room (king sized bed, t.v., closet, vanity with mirror, ceiling fan ), My sister in Living room ( couch bed ), 2 kids in bunk beds, 1 "small" 5 year old in a pull out bed in room with bunk beds. I think all kidsuites have them.
As for check in, if your desired room type is ready, they'll let you check in before 4:00p.m. Breakfast is 7-11am, get there early and avoid the rush. It seems that every guest in the hotel eats there.
The pool was great for late night swims. All the kids loved the pool. There are many built in toys and spraying water areas to keep the kids busy. They also had pool toys (floating whales, etc. ) for the kids to use. Best of all, 2 great hot tubs.
We couldn't believe how close this hotel is to disney. We were at the gate to MK in under 5 minutes. It seemed the wait to make the left out of the hotel took longer. We also used the hotel across the street as our landmark. It's so tall that if you get lost coming from the parks, just look for it and you'll find your way back.
I think you'll be there during memorial day weekend, usually a very busy time of year. Crowds can get quite large, hit the parks early. We'll be there too, 5/23-5/28, but we got a great rate at AKL, next year we're going back to HIFS. Have a great trip.