I just got off the phone with Cedar Point's office about fast pass details. Here's what the website doesn't state about the passes: 
- You get unlimited rides on the specified rides, not 20 rides and your pass is useless 
- You'll take a separate entrance to the station platform where you'll wait with other fast passers 
- Once at the station, fast passers get first choice on seats, any row they want. First come first serve on rows 
- There will be no wait on the rides other than with whoever else bought fast passes 
  
Hope this helps with anyone who had other questions about the passes!