I've been to Lawson's Landing many times. The first time was about 2010, when I took my two dogs and had a meet up with the Aussie activity group. I've been with a tent, with a truck camper shell, and with my motor home. I think motor home is best based on their weather but there are always a lot of tent campers and they don't seem to mind.
Lawson's Landing is family owned and on the Tamales Bay. It is a very short walking distance to Dillon Beach, which is an awesome off leash dog beach. There are two places you can camp at Lawson's -- the seawall or the meadow. I've camped at both places but have been leaning toward the meadow lately. The seawall is awesome if there aren't a lot of oyster fishermen but otherwise, recreational campers don't really fit in.
I've heard that Lawson's is a party place and can get noisy but they do have quiet time after 9:00 p.m. and when I've been, people have respected that. I try to go during the week when I can. If you are a longtime Lawson's Landing person, you will notice a huge change this year. 2016 was the 5 year deadline for monthly trailers being moved out. The coastal commission said that the family could no longer have long term residents due to environmental issues in this fragile environment so you will see a lot of vacant lots as you walk around.
There's plenty to do, whether you want to relax, take long walks on paved roads through the dunes, hike across the dunes to the beach (strenuous), go fishing, walk into the town of Dillon Beach, fly kites, bird watch, or just enjoy the ambiance. I like the little store that is down by the pier and boat shop and always buy a bag of saltwater taffy -- kind of a tradition. They are very dog friendly and well-behaved dogs can be off leash everywhere, including in the store and on the beach.
There are no hookups and many of the former restroom buildings are closed, but if you have a self-contained RV, it's still perfect. There are new walk-to camping spots but they seem really close together to me so a less crowded time of the week is probably better for those.