Paul,
Here is the Flyer for the Classic, only the 1st page got posted on the website.
Entry fee two years ago was $20 or $40 if you were not a NASA member. Not sure what it is for this year.
The contest is run just like the Nats, Friday has Static then flying on Sat and Sun. So be ready for Static by 8-9 am on Friday. I believe you can register the day of the event on Friday. Last year they had Pre-registration set up but not this year.
Profile and Sport is invitation only
Fun and 1/2a scale is open to all pilots
Fred