Do tickets have to be purchased in advance or can it be purchased upon arrival?

PAY 2 SKIP THE LINE ITS WORTH IT..

Either or better to go and purchase at door

I paid for the skip line. The regular is waaaaay too long.

Either or

You can purchase online or at the door. Either way you have the option to pay extra to skip the line once there

Its highly recommended that you purchase your tickets in advance.

You can pay in the line it was packed so I advise go early they had a 20 dollar skip line if you didn't want to wait

Online is cheaper but you can also purchase at the door