With a membership can you go as many times as you want in a year? Can you cancel your membership after a year of you want?

Yes with a membership you can go anytime. There's an expiration date with your membership just make sure you're not signed up for automatic renewal

It's definitely worth it. You can keep going, and there's a ton of places included. Now... if only there was a yearly parking pass..

Yep. I think that you're able to visit several other museums with the same pass, too

Yes. I've gone 4 times in the last 3 months. They always treat me like a VIP. It expires after 1 year. I imagine they will encourage you to renew. The cost of the membership pays for itself on your second visit.

yes