There was a thread about Seattle a month or so ago.
Anyway.
The Boeing tour is fine. After 30 years at the company, I finally had a trip to the factory, but not the formal tour. If you aren’t an airplane or manufacturing buff, you can pass, but that’s just me. The Museum of Flight, which is 40 miles south of the factory tour at Boeing field, is really showing its stuff. The WW2 exhibit is fantastic, and the outdoors, covered displays are great. If you were taking in a Mariners game, it would be a worthy detour. I get to walk past it at lunchtime.
Make reservations for a Theo tour. They might not be needed, but it would be a shame to wait/not get on one. Follow up with lunch ((Brouwer’s, though a bar has really great food and is a block from Theos). Walk around and enjoy the shops in Fremont, then eat cake at Simply Desserts. You can also take the cake home. H is partial to the chocolate fudge, younger D loves the raspberry, and I get the salted caramel or amaretto. Better than home baked.
Kerry Park at the top of Queen Anne Hill is the best free view around. All the prom and engagement photos taken there.
BB suggested Daniels in Bellevue. Great happy hour and view.
If you like wine, go out to Woodinville, which is north of Kirkland. Chateau Ste Michelle has daily tours. Have lunch at the Hollywood Tavern or the Russell’s at Molback’s nursery or The Willows Lodge. There are lots of wineries to visit (I like Brian Carter Cellers, we’re in the wine club, DeLille is next door.)
I like the Pike Place Market. Ignore the fish throwers. Buy a bunch of flowers to have on your dining table. Go to Cafe Compagne and feel like you’re in Paris. There are a couple of Tom Douglas places right there for a nice lunch, too. I love, love, love Watson Kennedy which is above Cafe C as well as their larger store south on 1st Avenue. Cheesecake at the little cheesecake place. Ellenos yogurt, or buy some at the grocery store. The original Sur la Table is right there. Ignore the Starbucks and go someplace else for coffee.
Flagship Nordstrom. Enough said.
See what the Seattle Art Museum has on offer or go up to the museum in Volunteer Park and conservatory.
Take a ferry to Bainbridge (walk on). Eat an ice cream at Mora’s and get back on and head back to town.
Like BB also said, watch the morning news for the traffic reports and then go to the DOT website for the latest. It is usually a nightmare mornings and 3-6 or 7, especially if it rains.