Corpus is not known as a "snowbird" place. There are but one rv park that I would actually consider staying in. And its way down the list of acceptable parks in my book.
Rockport and Aransas Pass are by far the best. And I know some will frown on this but , Rockport to me is the middle class and Aransas Pass the upper middle class, and Mustang Island are for the wealthy.
If you just want good weather, fair pricing, great local people and the greatest fishing in the world (google that and it will be confirmed) , then Rockport Aransas Pass is your place.
However, please don't make reservations at my home park, they may kick me out !!!!