Can we get an appt to visit today?

Saturdays you don't need an appointment. I would recommend arriving at 11 to 1130. They open at 12.

Call the number on the website. The recording will probablt say the same thing as the comments above but I'm more comfortable calling as it's usually the most up-to-date source.

You don't have to book in advance. You can buy tickets at the gate. Bring old shoes as it is very muddy.

You'll have to visit the website to book or go in person.