Be prepared to see a lot of people and use that to your advantage. If you are going to get discouraged because you get walked in on then don’t go. It’s pretty much impossible to go “deep” as there are roads everywhere. A good 4x4 is a must.
I've only been down there once, and that was around 1990. Back then a good 4x4 was a must, and a jet ski would have been even better. I rode up on a K5 Blazer sunk in a hole with mud up to the middle of the doors. He asked me to help pull him out. I had a 4 cylinder Toyota 4x4. I declined to help him, because I didn't want to tear up my truck, and would have, but did find him some help.