I had to make the reservation 6 months ago early on a Saturday morning (as the camp sites often fill up within hours of going on sale), but we lucked out on the weather, and seven of us camped on Angel Island (5 by bike).
The Long Haul Trucker handled well as usual, even loaded with two unconventional panniers:
Two of us missed the first ferry back the next morning and got to take a spin around the island loop road, and at least briefly eye the old buildings, burned trees, and other sights.
Easy, fun, and less than 24 hours away from home.
Some notes about the food got posted elsewhere: http://therobotmusteat.com/2012/07/29/korean-bbq-camping/