Is it possible to do US and IOA in a day?

[Planogirl]

Definitely walk through the queue of Dueling Dragons whether you yourself ride or not. It's really cool and there's an escape doorway to the outdoors right before you get to the ride itself.

 

[michelle1]

We did both parks in one day on our Nov trip and a late Aug trip and we had no problem doing almost everything and some of the favourites twice. Nov was less busy than Aug and in Aug some of the rides shut down in the rain which will be the same issue in Sept.