The monorail does not go to Downtown Disney. It does go to the Contemporary Resort, Poly, and Grand Floridian, as well as MK (by way of the transportation and ticket center, and Epcot). I might suggest dinner at one of the monorail resorts and take a spin before your ADR. You will have to drive to the other resorts if you have a car. If you don't have a car, you can take a Disney bus to either Epcot or the TTC and then ride the monorail around before getting back on a bus to your hotel. You can't take the bus directly between resorts, but you can take a bus to Downtown Disney from your resort.