Do you mind being slightly drizzled on?
If not, Seattle/Bellevue are a great option. Or Portland even.
Seattle as in Amazonville? Explored there a bit last summer, pass. All cited items are worse.
Portland I’ll admit haven’t explored well, so not going to give a judgement.
> highly walkable, diverse activities
I don't think Bellevue fits the bill here, but certain Seattle neighborhoods do.