No
Reservations are highly recommended especially on weekends.
No, but if they're busy you have to take a number and have to wait for your tour time.
No, its first come first serve, you can buy tix online
No. You can walk in and signup for a tour. But they're popular on weekends or holidays I'd suggest a reservation. The tours are great you'll enjoy them.
If you take the extended tour you will need reservations, otherwise they are free
Thanks! Your answer is awaiting moderation.