If you all want to stay in the same section then that'd mean Alligator Bayou ideally, have you put that in your room requests? How many rooms have you got booked, and are they linked reservations (apart from your Grand Gathering).
If you want to fax the resort to confirm / reiterate your requests then I'd suggest doing so the number of days ahead that you have rooms booked - i.e. two days before your arrival for two rooms, three days for three rooms, and four days for anything greater. Just ask them for a close area of your choice rather than for adjoining rooms (it's more unlikely that four or five rooms right next door to each other would come up on the same day).
Andre