Big_w_powah
I live on the east side of the state now, I lived in Seattle from 1994-2004. I know things have changed but I can still tell you some cool sites.
Sports wise, you have to visit Husky Stadium. It is one of only two Stadiums on the water in all of College Football, Tennessee is the other one.
As far as sites in/near town, there tons and tons...Gas Works Park, The Troll Under the Bridge, the Piers, Burke-Gilman Trail, Shilshole Bay, Golden Gardens, obviously the all the Lakes and tons more. Oh and how could I forget Kerry Park, it is where I proposed to my wife.
A few hours away you have Mt Rainier, The Gorge at George and Vantage.
I would recommend cool spots to eat, but I have no idea what will be open when the Pandemic is over. If it survives the Pandemic check out Voula's an amazing breakfast spot with chili cheese omelets and I know you already found Dick's
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Lastly, if your kids are into basketball, Spokane (4-5 hours east) hosts Hoopfest every year which I believe is the largest 3v3 open entry tournament in North America. It has been going for 30+ years.