FF Airlines
 

I intend exchanging my Marriott Rewards for several Marriott package awards for a trip to either Caribbean or Mexico. The package awards include FF miles. Which airline should I deposit the FF miles with to get best value and more important, a realistic opportunity to reserve seats?

I thought the post was about FF, now defunct Tower Air which flew 747's JFK-OAK and other JFK routes. Only a FTer would think of FF.

Why don't you search airlines for availability and schedule from your city? During the winter and early spring, several American airlines have better seat availability.