While you're in Port A, look at Gulf Waters. We've stayed there when we couldn't get in Pioneer on short notice. They're a deeded RV lot property. There's also a new spot in town next to the wharf. Port A is a neat place that's poised to be ruined by high-end development. Just next to Pioneer is a 36 hole membership golf course with multi-million dollar homes. Prices are already sky-rocketing. I hope it will retain it's personality in some way. I'm afraid it will look like Santa Barbara or Miami Beach in a few years.
I agree with you completely, it is becoming a tourist mecca and the prices are changing rapidly. They are going to ruin the town.
There is some really good eating places in Port A and also Rockport (our favorite).
Gulf Waters is a 5 Star place, really nice, but be prepared to pay $45-$50 per night. And they are still working on it, do not think the rec room is ready or any thing but swimming pool. Showers and restrooms are a long way from sites and close at 6pm. This is as of last summer. Landscaping and sites are really nice, access to beach is fairly close with boardwalk over the dunes.
The Mustang Island State Park is a good state park, but it is just like parking in a parking lot with electric and water. Beach is over 1/4 mile away. But that is not bad for where it is located. As there are no trees on the island or shade unless it is man made.
They do have a shuttle system that makes the rv parks for service into Port A. Do not think it goes into Mustang Island State Park. But it is nice if you want to go into town and walk around.
Jim