Much better going to one of the club's like quest or Pandora or wherever is local
Erm, maybe. LA Chambre is the closest Swingers club. It's ok if you like 50 somethings trying to be 25 and decor from 1996.
Couples do go and I've had fun with a couple. My only concern would be that the girls will fuck anyone there, it's their job. Your partner might not be as interested in this and people will likely assume they can just 'pop it in'. I'd consider it sure, but if she's never done this sort of thing it might be a killer for her.
What I will say is that most Swingers clubs charge a membership fee on entry for new people.... But I'd image unit 8 would charge you £130 each.

Maybe try a website like fabswingers? I'd always come lend my cock for a gangbang if she wants one
