Some things you cant miss? Bums in tents unfortunately.
if the weaher is nice which is pretty likely in early may, you might like an Argosy cruise of the Locks, you can see how the locks work and see the lake washington ship canal, fishermans terminal where many of the deadliest catch boats are and South lake union which has turned into Amazonia.
https://www.argosycruises.com/argosy...SAAEgLMKvD_BwE