As listed in previous posts a 4wd will get you there no problem. The rough area is only about a couple hundred feet.
When I came down at around noon, there was 20 or 30 cars parked along the road at the point were it gets rough. Some jerk at the front of the line had parked into the road making it almost impossible to get around their car without falling off the road. I can‘t imagine what a weekend will be like. Also, the cars were parked bumper to bumper so close I don‘t know how they got turned around to drive out.
I would park much lower on the road than the rough spot and go ahead and get your car turned around for your drive out at the end of the day.