Yes
I had to manually add my Swan confirmation to
MDE. It said it could take up to 72 hours to show up, but mine was there within about six hours. Then just assign your guest to your party.
Was able to use the Passholder discount (
QWH ) to get a nice discount on the room, and for some reason the Swan was less than the Dolphin, which was unusual. But rates are always changing....
Also booked with the Marriot App.... The S/D website counted kids as adults whereas the Marriot App didn't. Just used the code under Corporate Discounts.