Definitely a fun way to spend one of my Best Friend's 30th Birthday! Our group of 5 did a mixer tour with two other parties. There are a few things that made the experience just okay:
1. There were not enough seats on the Trolley Pub so someone had to sit in the middle which I thought was strange.
2. We stopped at 3 already selected places: Heist Brewery, Davidson Street Public House and Birdsong Brewing. I wish we had some sort of input but those places were fine by me.
3. Our driver wanted to play his music which none of us enjoyed. It was not until after the second stop that we took the speaker and synced it to one of our phones. Unfortunately the speaker was not loud so we plugged the phone into the Trolley Pub stereo and jammed out, why wasn't this option offered when we first started?!
4. No alcohol is allowed on the Trolley Pub right now, they are working on changing this though.
I do recommend Trolley Pub. I did have a better experience with the one in Downtown Raleigh, I think Charlotte is just a bit too congested.