Such a unique, hilarious, and fun way to see the city! It was reasonably priced and the tour guide and the boat driver were both great--they had obviously worked with each other many times before and had their act down to an art form.
You get onto the vehicle just outside the city and drive into Pittsburgh and up and down the crowded streets (literally) quacking at people as you go. The guide had a lot of interesting information about the city that I'd never heard before, and had a magical way of actually making history fun to hear. After driving around for a bit, you plop into the water and get a really cool view of the city from the river. The driver even let a few of us steer the boat, which was fun. Also, luckily there's a shade on the vehicle/ boat so you don't have to worry about being stuck sweating in the sun for an hour.
I would definitely do this again-- such a fun and different experience!