Yes, you do. You get all the perks of any other Disney resort except you can't charge park purchases to your room, and you don't get Mickey Mouse soap. They have these great oatmeal soap bars that are much better.
Also keep in mind the Dolphin also has great transportation to the parks. You have to take the bus to MK and AK, but you can take the boat to EPCOT and MGM or even walk if you'd like. It's nice to leave the driving to someone else while you're on vacation