Looks like I'm once again a bad planner. If I'm reading it right San Juan Islands is already pretty booked (duh) for campgrounds. I don't see anything that says they allow folks just to show up with their bikes, like they do in Portland at Vernonia.
I already rented a bike for my sister (great deal) from Citybikes, so I'm going to have to figure out Plan B -- perhaps just bike around San Juan Island and then camp at Lopez or Orcas only.... Thanks all..anyemore plan b ideas would be good, particularly recommendations on where to camp (specifics would be great)