I really don't think you would be disappointed with either. I haven't stayed at the Dolphin, but have stayed at the Swan. When I was deciding between the two, I picked the Swan because it had queen beds (the Dolphin had double...this may no longer be the case with the rooms in both resorts being renovated) and was quite a bit smaller. We did use some of the Dolphin's facilities (laundry, Tubbie's, etc). We will likely stay at the Swan again, although not before other WDW resorts that are on our list to try first.