So APTBS doors are at 9:45 according to the e-blast. With two openers, they won't be going on until 12 at the earliest. OP have only one opener so they'll probably be done by 11.
If someone really wanted to get his/her music marathon on, he/she could feasibly catch minus the bear who will be done by 9 at the latest, high-tail it to the BC for OP and be back in time to catch APTBS' set in its entirety.