Tex. Parks & Wild. Code § 43.523

Possession of a conservation permit does not relieve the holder of the requirement for holding any other permit or paying any other fee or charge for the entrance to or use of land under the department's control that is authorized by law or rule of the commission, including Chapters 12, 21, and 81 of this code, however, the department may grant discounts on charges for entrance and use of land to holders of conservation permits.