Hi, Thank you for your question! I am so excited to read that you will be visiting our park in October. Express Passes can e purchase on our website or at the front of the park. I do recommend purchasing your Express Passes as far in advance as you can, as there are only a limited number of passes available per day. In addition, be sure to assign the proper date to your Express Pass so that you can use it when you get here. I hope this helps, and I look forward to seeing you this October! -Tori