Well joining my figure skating club has definitely advanced my skating, apart from the stuff covered during the club sessions, which is primarily based around fun, I am recognised by all the rink and coaching staff as a serious skater, and I am now helping on a volunteer basis with the Learn to Skate classes, which also sharpens one's skills.
I think most clubs require a minimum skating standard, ours specifies LTS level 8, although they will accept skaters at level 5, which is also the minimum standard for the hockey club.
Best thing to do is pop in and have a chat when there is a session on or perhaps towards the end of the session.