I fly out of BNA a couple time a month, it's super fast, no problems. I usually show up about an hour and 20 before flight time, park in economy, take the bus, check in with the Sky Priority lane which has never once had somebody in it and go to the SkyClub. Alot of times I have checked my bag, gotten the boarding pass, passed security and into the SkyClub in about 5 minutes.