I am sure that you know the Swamp is not accessible anywhere just by driving up to the edge. If you are actually want the swamp experience, try Stephen Foster State Park. Canoe rental, boat rental and (sometimes) boat tours. No sewer, but dump stations. We have stayed there several times over the years.
I turned 40 YOA in the swamp many years ago as we paddled from Kingfisher Landing to Stephen Foster across that edge of it. Took 3 days but a lot of fun
horsedoc
2008 Damon Essence
2013 Jeep Sahara Unlimited
Blue Ox tow