As another October Jamaica bride getting married the weekend after you are, I think it will all be fine. A few things to consider:
Although I sent STD's in January, people are just deciding now whether they are going or not and making plans.
KEEP IT SIMPLE - If you are having an elaborate AHR when you return, then keep it simple in Jamaica so you can relax and enjoy. You, the important people, and the beach!
Of all the amazing ideas that people come up with here, decide what are essential to you and what would "be nice to have". Take care of the essential and hold on the "nice to have" to see if there is time
Join us in October.... happy to have you
Congrats