The Flounge is really very nice indeed IMHO...but to be honest, in the circumstances you describe I'd do the Galleries Club so all 4 of you could get in together assuming you're all good friends. If not, the other alternative of course is to lie to the other 2 about the time you get there, say you arrived late and then for you and Mrs. WS to 'Flounge it up good' for a bit until you 'just about' meet the others at the gate

Just don't go to the Flounge if you're specifically after premium spirits over the Galleries Club these days