Speedy,
I have heard that Little Eygpt does enforce many rules and requires a state sticker. ($10 per day + $18 for the annual sticker)
The riding area near me, King City Dirt Riders, does not enforce many rules when there is not an event going on. The only rules posted on a sign at the front gate is wear a helmet and no drinking. I have a key to the gate and can bring friends once in a while for no cost. But for me $35 per year is pretty darn cheap knowing you will never get run off for trespassing..lol Also, it is only 2 miles from my house.. Pretty convenient..
Let me know if you ever want to check it out at no cost to you..