They usually open up
registration for the Bluebonnet
rally at the end of January, so it should be coming soon.
Sign up for this website to follow the announcement.
https://www.mfrvg.com/bluebonnet-casita-rally
We frequently make treks between New England and our home in GA, and also between GA and our daughters home in San Antonio. Normally we prefer the Corps of Engineer (COE) parks along the way, half price if you have the senior pass.
If you have the time, check out the Natchez Trace between Memphis and Natchez, MS. Scenic drive with no commercial traffic, and a couple free (no hookup)
campgrounds on the way.
If you take the North route to Bandera, there's a nice COE campground in Ennis TX, self claimed Bluebonnet capital of Texas, and close to the
Casita hatchery.
If you take a more Southern route, there are several good COE parks on the way, some right next to the Tombigbee river where you can sit outside your camper and watch the boats go by.