You can go there and wait. if someone has extra tickets you can use them. we waited like 20 minutes and we were able to get in but we are only two people. In one group three people didn't show up so there were three extra tickets and they were willing to give it to us.
So since the calender says no open available tickets that means i won't be able to go?
No. You must have a ticket.
Thanks! Your answer is awaiting moderation.