1) I save you time. I am familiar with the products I sell, as well as the areas you want to travel, and for that reason, I am able to quickly find a property that fits your needs, in the places you want to go, and when you want to go there.
2) I am not just a travel agent, I am a travel advisor. Because of my extensive travel experience, I have made mistakes, and I work to make sure you don't. Little nuances you might not think about, I have that nugget of information, and I will share with you. If you have a question, and I don't have an immediate answer, I have a large enough network to find the answer.
3) When you go to a hotel or resort, they see you as a one time guest, just someone passing through, but with me, they rely on me putting someone into that property again, so it is imperative that you are happy so I am happy. Before you arrive, they know you are booked with a travel agent, and you will probably be treated differently from even before you walk through the door.
4) You get benefits that might not be available if you booked yourself. Often times when I book, my rooms can come with breakfast included, free wi-fi, maybe food and beverage credits, and I can try to work in upgrades (if available), and early check-in and late check-out (again, if available).