My 4 year old had a great time and we will definitely be back! We were there for 2 1/2 hours but easily could have have stayed much longer (we only left because they were closing). The climbing structure is huge and there are a lot of different things to do. We went on a Sunday afternoon and it was packed (2 birthday parties going on) but there was still plenty of seating for the adults and the climbing structure never looked busy because it's so big.