Depending on how old your kids are. My younger kids under 4 really enjoyed it the older ones were done quickly and ready to leave. There is no reentering once you leave. So eat before you come.
Once you make it in you can stay til it closes...
There's a stupid amount to do besides just looking at Legos, i think there's at least an hour of fun in it.
Like Ashley said as long as you'd like. To be honest we where only there for probably about 30-45 minutes. Not much to do for kids under 4 years old. They do have 2 or 3 rides. The children have to be over 4" ft to ride. The building stations are okay. It gets crowded and legos are everywhere.
You can spend as long as youd like once you are admitted. Theres probably a good two hours maybe three worth of stuff to do. They have a few rides, and tons of building stations around.
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