I would plan as a Grand Gathering. If you do, they are supposed to guarantee your rooms will be close, if not connected. You can plan together online, as they give you all a Grand Gathering number to link all of your reservations together. If you are dining together, they will let one member of your party, who you determine, makes ressies for all of the party.
We are a Grand Gathering for November. I booked everyone's packages under different names. You just have to have everyone's address and ages, basic information. Then, they emailed each one of us with our own personal details. Each one of us is paying separately, too!
They also have some events that are offered ONLY to Grand Gatherings to make it a little more special for your group!