Is this a walk in bar or do you need reservation or be a member in order to access?

Members only

You have to be a member to get past the front desk.

Members only, but you can go as a guest if you know somebody who is a member.

You can get a table for dinner in the Founder's room on Open Table but no access to the rest of the club.

Members only or guests of a member

Members only, and guests with member sponsorship. Sign up or gotta know somebody