We didn't stay at Ace, but we sure had a fun day there! We booked a whitewater rafting trip, and received Ace Lake privileges as a result. It was such a great combo - we played at Ace Lake all morning, and went rafting at 2 that day. My kids loved all of the inflatables in the lake. Of course, when I tried them, it was like an episode of "Wipeout!" I loved the zipline into the lake, and the water slide was high, fast, and fun as well.
Our rafting trip was Ace's half day "Lower New" trip. It was really a blast, although the best parts were the rapids. After a while, I was wishing there were way more rapids, and fewer calm spots. We had a 13 year old with us, though, so we couldn't do the extreme run. The guide was terrific, and overall it was lots of fun!!