We took the locks cruise during sunset. Seeing the city as well as the mountains at twilight made it worth every penny (it is fairly expensive). This was a birthday gift so I guess its easy for me to say but I wouldn't regret paying for it. The trip was so romantic and beautiful.
The tour guides were pretty informative and the crew was friendly. I think its great for both tourists and locals. You learn a little bit of trivia and if you are new to the area a lot about the different neighborhoods of Seattle. It gives you a good sense of the city. But besides all that, its just fun to go out on a boat trip once in a while and see the salmon jump! :)
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