You need to purchase tickets for a certain time slot to enter, and there are a limited number of tickets during each time slot. When we visited in October 2020 we tried to purchase tickets when we arrived on Friday and were unable to get any for the entire weekend. We came back in spring 2021 and it was SO COOL! Fall is a popular time for visitors to the White Mountains. Plan ahead if you want to check this place out while you're in the area for the wedding.