To Nemo, Or Not To Nemo?

I have been getting the full court press from the youngest member of our family to hightail it on over to Disneyland, wait in the no doubt interminable line, and ride the revamped submarine attraction. We might actually attempt it at some point this week. Worst case: we board our sub after 3-6 hours of waiting (I'm an optimist), and Tyler decides it terrifies him and he needs to get off. (Ask Marc Canter: the dinosaur tunnel in the train ride was very touch and go.) From this early fan video though, it looks like he'll be able to hang with it. I hope. Have mercy.