I have a Family Membership. Recently checked a few places and couldn’t book a membership timeslot...plenty of tickets available for paying customers though!! I totally disagree with regards to people saying that a membership of NT is based on them being a charity. You wouldn’t give money to WaterAid if you found out they were selling the water to the Africans would you? They sat through Lockdown with a million subscriptions coming in and little outgoings beyond maintenance.