I go with children, and we're usually inside about 30-45 minutes. There are a lot of nooks and crannies for the kids to explore.
If its crowded you might be there 25 minutes. If its less crowded you will be done in about 10
It is smaller than the pictures suggest, however there is no set time limit on the amount of time you spend inside. You are sort of just free to roam.
If you go with kids get there when some daylight left so the kids can have fun on the slides and in the castles. It is beautiful just to watch as the castles start to light and change colors as dusk to dark progresses
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