those are good ages for nick hotel. we were there when kids were 5,6 and 10.and also when it was holiday inn when kids were 2,4,8. they had a blast. it can get a bit crowded, but the kids did not mind at all!!! they have zero entry for the younger ones and water slides etc. lots to do for the kids. would not reccomend the restaurant though - not very good. and the hook that kids eat free still is not worth it imo. last time i was there they had an onsite pizza hut where kids ate free - cant go wrong with pizza hut and kids.