No more than 2 hours. Depending on how fast you do the center you can finish in 1.5 .If you have kids they will want t play more so then you will be closer to 2. :0)
I would definitely check their website to find out when specific events are taking place and plan my trip around those. If you do that, it will take a couple of hours to see it at your leisure., particularly if you have children with you.
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