Free! You need to get your free tickets online before you go, but that's online because the demand is so high. A donation is suggested. They do have wheel chairs, as for them after to get through security.
You can purchase tickets online but you basically go through the same check in procedures either way. They are a recommended donation of $15 for adults and $10 for kids. I purchased tickets early, but would not do it if I go again. They do have wheel chairs.
You'll have to go on their website and see.
Tickets are free but need to order online to get assigned time entrance. They do recommend donation. Well worth it. Wheel chair accessible.
They ask for a $15 per person donation for adults. Less for kids
It's a great place and well organized. Suggested gifts $15 Adults and $10
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