At one time I had over 1 million frequent flyer miles, around 700,000 on US Air, 300,000 on Delta and maybe 150,000 on what was Continental.
Every couple of months I would look into getting a membership in one of these clubs, it never seemed like a good deal, I only went into one of the clubs when I got a promotional award that offered a free visit to try the place out.
I use to spend plenty of time in airport bars which were usually more convenient because they are everywhere versus the Sky Clubs, etc....
Just my opinion.
Every time the club staff would refill the cooler, the Saudi passengers would empty it. Finally, they put in some generic American brand (Budweiser as I recall) which they mostly left alone until the caught their flight.
Then the staff filled in the gaps with Heineken. I've been to gatherings of "good old boys" from the south who couldn't drink that much beer. Maybe the Saudis were hiding the cans in their robes!