Travel Note
There are 3 ferries that will take you over to Kitsap Peninsula: Seattle/Bremerton Edmonds/Kingston Coupeville/Pt Townsend The Coupeville/Pt Townsend route is the only one with reservations, the other 2 routes are first come first serve as of right now. WSF sometimes trials reservations on other routes so check the website for updated information.
Travel Note
There are several state parks on the Kitsap Peninsula, reservations can be made at: https://washington.goingtocamp.com/ There is a Fairfield by Marriot hotel 10 mins away in Poulsbo https://www.marriott.com/reservation/rateListMenu.mi There is also a Best Western in Silverdale a little further down the road https://www.bestwestern.com/en_US/book/silverdale/hotel-rooms/best-western-plus-silverdale-beach-hotel/propertyCode.48174.html
Train
The Providence Amtrak station (100 Gaspee St) is a 4 minute drive and 15 minute walk from the First Unitarian Universalist Church (1 Benevolent St). There are many hotel & AirBnB options in the area.