Prebook your spa appointments at
[email protected] and they will follow you to your departure concourse whatever it may be. However Mrs. and I have had some luck recently in showing up to the best Timeless spa located just outside the First A Lounge and having them honor the appointments even if we were flying out of B or C. In my opinion A is still the best F lounge by far. The entrance to B is still under construction I believe and in any case it isn’t as special as A. Just leave enough time to be able to get to your gate if not flying out of A. Enjoy your flight!