Was told by REI employee that online appointments could be made at local REI stores to schedule private time for backpack fitting in my case. I did not find the link for this on your web.
I recently had a superb backpack fitting at the Oxnard store. Just walked in and receied a thorough careful fitting - no appointment necessary and a superb experience.
@hikermor thanks for sharing about the great service you had in Oxnard!