Newbie Questions

We are a married couple (M33 F31) we have discussed swinging and potentially going to twist on a Saturday.

Want to understand how everything works or if anyone can DM us and answer our questions if possible please?

Is there an expectation to perform first time or do most people watch? Is it best to meet a couple before attending just to build some familiarity? What is the dress code?

We have a few more questions but don’t want to take up too much space in this post

Hope you can help advise us, thank you!