Hello,
I was intrigued since I thought Meadow Park usually opened Monday. Looks like the site is all updated. this is from the FAQ's now, extra day!
------Where can I camp?
We have three camping areas available up to a mile from the festival. Camping passes are sold per person, not per site. We have permanent restrooms on-site with real showers and real toilets! We also have the lovely Meadow Park campground available only about 2 blocks away and the Olson camping area about 3/4 mile from the festival. All camping is first-come first-serve. On-site camping opens at 6pm Thursday, Meadow Park opens at 1pm on Sunday. Olson opens at 9am Thursday. All camping areas close at noon on Monday. ------
http://www.bluegrass.com/rockygrass/faq.html#1057436478And I bet you can pay for Saturday but it might fill up.