You can pay WHEN u get there
We highly recommend setting up reservations before your arrival. There is no guarantee that we are able to accommodate visitors that arrive without a reservation and our tours often fill up for the day with visitors that have called or made reservations online.
I purchased in advanced as the tour groups are limited in size.
You can pay when you get there. I think the tours are every half hour depending on how many people are there.
Show up an pay. If you have a larger group you may need to wait a little longer for the next tour. (not by much though! 10ish minutes.)
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