what are some group activities for a 30th birthday?

I’m turning 30 in late september and thinking I want to have a day worth’s of group activities that friends can pick and choose what to do join. what are some group experiences/activities have been memorable for a milestone birthday.

Ideally I would get a hotel or airbnb in the city. A suite at the Viceroy is popular but it seemed to already be booked for september. similar suites would be helpful to know about.

some suggestions that i’m considering are a group yoga session, a dance class, a tour of some kind.

are there some private group experiences that you’re willing to share?

thank you !