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I did the Boeing tour while in the Seattle area a few years ago. Stayed at the Marriott on the waterfront and the tour bus picked up at the hotel (made the rounds). I really enjoyed the Boeing tour! We did some sort of combo thing, and went to a winery afterwards.
We did rent a car for a day (from the Hilton), drove down to the Museum of Flight, also great. Then continued south, drove along the Tacoma waterfront, and over the Narrows bridge, to Bremerton, and took the ferry back to Seattle. The views from the water are amazing; the clouds opened up and got a great view of Mt Ranier.
I'll add that I spent a year and a half in the army at Ft Lewis in the early 90s, so I knew some of the area.