I don't believe you can. It is still fairly new. But you can always purchase the tickets there in person. They are extremely friendly and helpful and will answer any question you have.
Everytime we try the site is messed up. Give them a call their super friendly & go out of the way to help.
Go to the website
They sell half of the tickets online. The other half is a first come til capacity met basis. Site was misleading, told me was closed today but called and park was open. Just online sales were full. Hope this helps someone.
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