What are the differences? Is one more family friendly and the other more adult oriented? Is one noticeably closer to Epcot? Or the boat launches? Does one accommodate more guests than the other in each room?
Yes, it is basically all one complex. The boat launch is right in the middle of the bridge between the two hotels. They share pools, fitness center, restaurants, etc. The main differences are the Dolphin is considered a Sheraton and the Swan is considered a Westin under the Starwood brand, so the Swan is slightly more upscale (queen beds as opposed to doubles as @BrianV mentioned). The Swan is also smaller so the walk from your room to the common areas and boat may be shorter at the Swan. The Dolphin tends to be priced, on average, a bit lower than the Swan but at times I have seen Swan rooms for cheaper. Disclaimer: I have only stayed at the Dolphin and not the Swan (and loved the Dolphin!).
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