Yes we can camp Thursday night. Here is the response from the park:
You can arrive Thursday night. Here is our camping memo if
you could pass along the info to the rest of the group that are camping
that night.
This is what you need to know. All camping is to the right of the
driveway in the designated area. The rules are posted at the potties and
at some of the sites. Basically, clean up your area when done, pack out
your trash, use the designated firerings in the tent sites (don’t have a
campfire in the parking lot!), no large fires or fireworks. Don’t move
the firerings around or put them together in bunches to have a big fire.
Don’t burn pallets or other wood with nails in it.
You're allowed on the property the night before for camping, you can come
and go out the driveway as needed, but don't go driving around the comp
course or onto the trails. If you get there before dark, you may see
others wheeling, but they should have paid earlier in the day to go
wheeling.
The office will be open the following morning starting at 8 a.m. for
everyone in your group to get registered. If you are new to the park,
you’ll need drivers and passengers to come up and register. The
membership form requires driver’s license and vehicle info from everyone,
even the passengers.
We recently clarified our policy on alcohol as follows: Anyone observed
drinking and driving will permanently lose their membership privileges and
their affiliated club will be sanctioned. No alcohol is allowed on the
property except for the camping area. Alcohol may be consumed only AFTER
you are done wheeling for the day and only in the camping area. Do not
walk around the comp course with alcohol. Do not drive around the trails
with alcohol in your vehicle, leave it at camp.