What sort of transportation are you using?
If you are going by bus, you can't go from resort to resort, you will have to go to a park and switch to either another bus or the boat to WL.
If this is the way you are going then I would leave 90mins between. Most likely it will take the better part of an hour...if you are lucky enough to have buses come within a minute or so.
But if you are a bit early you can check in and then take a look around the resort. It is beautiful, I could spend an hour or more just taking in the lobby and the gift shop.