My husband and I are planning a visit to Seattle over Memorial Day weekend this year. Flying into Seattle Friday, the back home Tuesday morning. We'd like to spend Friday night in Seattle (we've been there before, so we only go see a few sights), then we'd like to see Bainbridge Island, and Whidbey. Any advice? Do we need reservations for the ferry? We'll be renting a car. Bainbridge first, then Whidbey, or reverse?