Kittenbear,
I went to a Sussex club last year a few times (but it has changed to a fetish club so I don't go anymore).
I guess the obvious first thing is to follow their rules. It means you won't annoy or offend anyone and and probably get some respect from the regulars. Such things like where you can be naked and where not. If they have set aside places from fun and games then get to know where. Maybe hook up with someone who seems like a regular and show an interest to understand the club and how it works. That way you'll win points for not being a couple in to just take advantage of the fun parts without contributing.
Take a good sized towel, tho' they may supply some at the door. It is good practice to sit on a towel when using any of the facilities. You may want to get intimate with people there but others will respect you not putting your bum direct on what someone else will use plenty of fluids with you - even if they have a bar - you know how energetic things could get hopefully!
I am sure you will have a great time if you don't act pushy and just realx into the atmosphere.
Good luck
Nigel
Yep, the towel thing is common with many regular nudist clubs.
It makes common sense really, tho' I am sure nobody has anything to fear from your bum! I suspect that some visitors are, lets say, not too particular about hygene!
I am sure you will do fine and come away with happy memories if not some extra freinds!
Nigel