It's all upfront
Fees are due upfront. Single adult starts at $111 but I recommend getting the dual membership so you can take a friend each visit. Also consider upgrading to the keepers club. You can read about the different benefits with each level on their website or discuss with the ticket rep at the zoo. Have fun!
Please see Cathy's post; it can't get any better
A'll up front
Upfront.
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