Bought the tickets off of living social that included a free drink at the bar.
Went at around 6pm. Basically no lines at all. Ride lasted about 30mins total.
This is one of those things you wanna try at least one.
If you plan to ride go at around 8pm when the sun is about to set. Also, save your free drink ticket till you get outside. There is another bar outside right before you board.
The bartender inside made us lousy mixed drinks. Better to redeem your ticket outside.