Drifter's is a great time, they have nice buckets of Red Stripe specials.

Mayfield was about $17 USD then a tip for the guide, we gave our guide (2 of us) about $2000J each. I think you could get cheaper tickets in town at the Negril Service Center? Can anyone confirm?
It is a really great 1/2 day trip.

Calico Jack's Pirate Shack at Half Moon Beach? I have not been there myself, but it's in the plan this time. $5 to get on the beach, $5 trip out to the pirate shack. A bit North of Negril.

~Moose