I was able to link my Swan reservation in MDE, but since the reservation is just in my name, that's the only name that shows up in MDE. So I assume I need to contact Swan and add the names of each family member to my hotel reservation so that their tickets will match up with the Swan room reservation, right? Otherwise, it looks like I would only be able to reserve FP+ for myself, right?
Nope! I thought the same thing, as my family isn't listed on my reservation either. I started playing with my fast passes and could get everyone signed up. I was surprised!