Going in to the experience we didn't really know what to expect, but we had the most amazing time. Our tour guide/chauffeur Vincent was awesome - a fun guy that really knew the area (we ended up on the Uptown tour) and didn't even get mad when I accidentally broke his selfie stick. I owe ya one bud.
We were a group of six so we ended up on a mixer tour as opposed to a private party, but I honestly think that made it even more fun - we met several other couples that were along for the ride and overall it was great company...And some great sing-alongs once the booze started flowing. I would definitely make sure you bring a beer or two along for the bike ride portion of the tour - but even if you don't the longest stretch we went without stopping at a grouping of bars was about 15 minutes.
All in all I would do this again and I would recommend it to anyone, whether you've been living in Charlotte for years or you're just visiting for a day or two.