The south sound is thick with good places to camp. This last weekend we camped at McMiken Island State park. The buoys were full by Thursday afternoon but there is good anchorage in the bay between the island and the mainland. It's small but a really quiet place.
At the north end of Harstine Island in Pickering Passage is Jarrel's Cove. It was not as busy here as I thought I thought it would be. The state has maybe a dozen buoys and there are (2) docks to tie up at. The private marina has gas (10% ethanol for $3.33 a gallon!) and some munchies.
At low tide we beached at Hope Island. There's lots to see but the tides got a little nasty, so watch that if you're on the hook, but there are mooring buoys as well.
If you haven't been to Olympia it is easily accessible by boat and there are many bars, restaurants and cool folks. All walking distance from public docks. It's as far south as you can go.
Penrose Point, Eagle Island and Gig Harbor are all worth a visit. Tie up by the ferry terminal in Steilacoom and walk 2 blocks south for a great breakfast.
Enjoy
Craig
253.241.9294
PS- Zittles is great. Boston Harbor and Narrows marinas (near the Tacoma Narrows Bridge) also have launches, but Swantown is a very nice facility.