Rebecca,
I live right near there. I have never been, but from talking to a few people who have gone, it is very crowded, and is just another excuse for people to get together and get drunk. They say it is nothing like a renaissance festival. ( gee, you mean you don't get drunk at ren faires

)
I have seen pictures posted in the local newspaper from years past, and they do have a pirate ship thats sails i nto the harbor and they put on a mock battle.
They have a small parade and people line both sides of the steert to watch. Looked very crowded in the pictures, but other then the piad actors i saw no one in pirate garb.
If you do go, the town is not that big, so get there early, caus e it will be crowded. There are a lot of liitle gift shops and restaurants, plus it is a popular area for boaters and fisher men. So summer time it is packed there. Plus Boldt castle and Singer Castle are there which are pouplar tourist attractions.