Go to their website to reserve seats or download the app
The website has that information. You can reserve seats if it looks like the show will be full, or wait to get to the theatre if not.
The internet
on line
Yes check online. You can also purchase seats ahead of time
If you go to the web site its very helpful you can even Reserve you own seats and the 3d is amazing
Taylor is right you can check online when you check in.
Thanks! Your answer is awaiting moderation.