The state park campground charges for campsites plus daily entrance fee (or annual pass). If you have beach parking pass ($12 Annual) you can camp on beach for free between Port Aransas and State Part Beach Area any time of year. [3 day limit consecutively in one spot]
If you don't have the annual pass, you will have to pay an entrance fee...
If you want to camp on the beach its free. But i was at state park RV camp where its like 20 a night .
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