We went because I have a 5 year old daughter and wanted to do something indoors (temperature was 110 degrees outside). I had allocated 4 hours but we ended up leaving after an hour. Not enough interesting rides and the place was sort of depressing (everything looked pretty dated). She ended up only doing a couple of the pay for rides.
I could see that if you were 48" and liked roller coasters, there seemed to be a couple of decent ones you could ride with very little wait times.