We visited the Chihuly Garden and Glass Museum shortly after moving here and loved it! Lots to see both indoors and outdoors. They also have glass blowing demonstrations which were so fun to watch. It's right by the Space Needle so you can do both in the same outing.
Quite possibly the cutest little town in Washington! Peter's parents live in downtown Edmonds and Charlotte's dad is 5 minutes from the town center. Lots of boutiques and restaurants. You can also walk the Edmonds beach and see the ferries. It's a bit of a drive from the Four Seasons, so we recommend going only if you have some extra time and a car.