A few years ago I worked for another "legacy airline" feeder, was also a Mid-Level frequent flyer (flew 75k rev. miles a year), and was also a club member.
I found the clubs to be a very nice getaway from the "blah" i consider gate areas.... to sit at a bar without having slobs all around, or children everywhere (less the Orlando club!), etc.
But, unfortunately at US-East, we are not permitted entry to the club unless you are a PSA crew member using the closed room on the D gates @ CLT! 😛
We're not even allowed to purchase a membership 🙁 🙁