Just have a few questions for anyone familiar with the area.  I'm looking at doing a weekend trip to Frenchman Coullee the weekend of May 30/31, and speaking to some guys I know in Seattle a few issues popped up that no one I know here could answer. 
  
Where's the best close by spot to camp?  In the parking lot? Across the river in the state park? I don't need a full built campsite, but I don't want to run afoul of any unwritten rules for the area. 
  
What are some of the better books/sites with route info?  This should be pretty easy to answer for anyone who has been there. 
  
When is rattlesnake season?  I've heard this is something I should at least be AWARE of, so figured I would ask. 
  
Thanks.