If your 40 is streetable, you can park at Ice House Resort, run the trail from Loon to Rubicon Springs to Tahoe (exit) and then loop back around on 50, and up the hill to your trailer at Ice House. If the 40 is not streetable, and the other option instead of driving around, is to run the trail backwards to exit.
When you sign up for a group, you will have folks to (meet and) wheel with. Everyone helps everyone along the trail and trail comm are there to guide. You'll be camping in Rubicon Springs a night or two depending upon your run and their arrival into the springs, which also allows you to meet other folks. Of course, its only as social as you want it.
Exiting backwards is certainly a time when you want to group up with someone. While there are usually many small groups exiting backwards, these are all informal. I am sure if you ask right here who is planning to exit backwards and if you can run with them, You'll have no problem.
Unless your cruiser routintely breaks down, you don't follow anyones advice, and you like to run 3000000000000000 to 1. then you might find yourself on your own.
But yes, please do get your registration in.
I wanna send my registration in by Tuesday. Okay that's easy, just cut a check and mail it out. I have never been to the Rubicon before. I gotta trailer my rig, so where do I park/camp? Is there anyone going from SoCal that I can group up with? I always tend to end up hitting up these events solo which makes finding a group to wheel with awkward sometimes.