We spent the weekend in Nashville, and are so glad we went on this party bus. It was purchased using Chase's credit card points travel page, and fulfilled through Viator.
On our tour we had Virginia and Tracyotomy (spelling?), and they were fabulous and super funny. The start location was sort of out of the way, but still within walking distance from The Cambria Hotel. The party bus is BYOB, but there is a HUGE liquor store across the street from the pickup location so it was super convenient. The liquor store also sold single beers so it was great for me.
Our driver was Rhonda and she also did an excellent job. The reason why I think it's important to give her kudos is because after spending a day in Nashville, you learn that the potholes are pretty horrid and everywhere so Rhonda did a great job maneuvering the giant bus without hitting too many.
We did see other party buses(and tractors) while walking on Broadway, but none looked anywhere near as fun as the Big Drag Bus was. I recommend it to everyone.