Why are we concerned about this now? Prestige has included agencies in its travel bonus category since 2014.
"Effective October 19th, 2014, unless you are participating in a limited-time offer, you will earn 3 ThankYou Points for every dollar you spend on purchases at airlines, hotels and travel agencies’ and you will earn 2 ThankYou Points for every dollar you spend on purchases at restaurants and select entertainment merchants, including sports promoters, theatrical promoters, movie theaters, amusement parks, tourist attractions, record stores and video rental stores;. You will earn 1 ThankYou Point for every dollar you spend on all other purchases."