Ferry boat ride round trip to bremerton, if open, try the inian smoked salmon on Blake Island (boat will transport you there.
Pioneer Square has a lot of bars and one cover charge gets you into them all (7 to 9 or so).The underground tour is entertaining history of early Seattle. Should you stay in a suburb you will need a car.
An Argosy Cruise maybe? Tour out to Woodinville and the wineries? Tour to Snoqualmie Falls?
Groups tend to do the winery tours in Woodinville or go to Red Hook Brewery. Thats pretty easy to arrange at little cost. Buppo de Beppo while a chain is always a good ‘group’ type dinner. Argosy cruise does a boat cruise, not sure this time of yr. Normally they would do a dinner cruise but it gets dark so early its hardly a good place. Pyramid Ale is another good group tour and dinner place. Its across from Safeco Field so maybe a tour followed by beer tasting
Your group might enjoy Teatro ZinZanni. The show is great and the food is excellent. It’s hard to describe the show—think humor, acrobats and contortionists. I have seen groups there and they looked like they were having a great time. It’s fairly expensive but the cost includes the show and dinner. Everyone I know who has seen any of their shows—either in Seattle or in San Francisco—has loved it. You can purchase tickets online at their web site.
There are excellent small boutique wineries around Seattle, especially in the Woodinville area and on Bainbridge Island. Bon Vivant Wine tours, www.bonvivanttours.com, offers excellent half day or day tours in the area. The owner, Bob, is very knowledgeable and a professional and has a wonderful van that picks you up at your hotel/motel. The tours are a good value and FUN.
Just to name a few....have a great time!
Very awesome and helpful post thanks!