RPPA Commercial Recreation Concessions Pilot Program Act of 2019 This bill directs the Department of the Interior to establish a pilot program that authorizes commercial recreation concessions on land patented or leased under the Recreation and Public Purposes Act. Interior shall enter into at most 10 agreements with parties to whom such land has been patented or leased for the establishment of these concessions. A party to such an agreement may enter into agreements with third parties to establish such concessions.