I am going to recommend Puerto Rico. Airfare reasonable from most US cities.

The major hotels have wedding packages. Partial to El San Juan

Bride and Groom slip off to the Spanish Virgins for honeymoon. Guest fly home

<img src="http://www.traveltalkonline.com/forums/images/graemlins/circle.gif" alt="" />

“Every time I open a bottle of wine, it is an amazing trip somewhere!” José Andrés