I landed from LAX and was connecting 6h later to IST about 6 weeks ago. Was travelling business and was a Silver member at the time. It was a Monday lunchtime and I was indeed issued with a pager which vibrates loudly when it goes off. 80 minute wait time. I did manage to get a facial afterwards. I'd book your treatment when you book your shower. One of them will come first. The shower rooms are not very luxurious. The showers make the most peculiar noise, and the whole experience made me think of British Rail for some reason. Not that premium.