This Jiffy Lube is tucked back on Matthews-Mint Hill Rd (across the street from Carolina Lanes). I went here on a Friday afternoon (mostly as a last resort- but that's a different story in-itself)... but they weren't busy at all.
The attendants were all nice. The part I hated was them trying to sell me all these different services when all I needed was an oil change. I was already in a crabby mood since the place I normally go to turned me away (in a sketchy fashion), but I was in and out of this Jiffy Lube in about 20min.
The prices for there services are on the "high roller" side, but they did give my car a vacuum and wiped down the windows while the oil was draining out of it.
Would I come back? Probably... but they have to do something about their prices to make their services more appealing to the wallet.