Travis, I know what you mean... things have been pretty busy so I need to start taking care of the little things (invitations, etc) as well. I'm like you and waiting until the holidays are over.
When booking, I went through Destination Weddings.com and once I signed a contract they got me in touch with someone in Miami (been working with Melissa Gomez out of the Miami office). Just recently Melissa gave me a name of one of the on site coordinators, Dulce, and just started to work with her within the past week. I know they usually state the onsite coordinator contacts you 60 days prior but sometimes it's earlier.
Are you doing one of the packages? We went with the Sapphire package but might change to the free and add on...