When we visited Seattle in July 2005 we bought the CityPass. It had tickets for the Space Needle and a variety of other local attractions. One of the tickets included in the package was for a one hour harbor cruise.

We had a good time. The cruise gave us a beautiful view of the city, and was a nice diversion from walking up and down the waterfront. One hour was about right, plenty of time to see the sights, but not too long either.