I house sit on Lake Washington, just south of the chaos.
If you are looking to wakeboard, head way North early so you can launch. Otherwise go to
http://www.seafair.com to read about the guidelines for being in the water on during seafair. (
http://www.seafair.com/non_boomers.asp And please remember during the air shows, do not tie up to the no wake buoys. You can get some good shots on the south side of Seward Park, very loud and very close when they enter to do a trick.
Also a good option that I did 6 years ago was the Party Barge, kinda of expensive now, but TONS of fun.
email me if you have more questions.
tcluv85@hotmail.com.