If your passing between Ochee and Spanish Town, I would stop at Faiths Pen vendor stalls for a good feed before they open up the new bypass. There is also a very nice blue hole maybe 15-20 minutes away. After you pass Kingston, on it's outskirts is Rockfort which has a luke warm mineral spring, and access to some of the remains of the fort itself, including old canons. On the border of St Andrew and St Thomas is the cane river, which has an excellent water fall and swimming oportunities. If I get a chance I will post some of my pics of those places. Bath has a small hot fountain spring, however be ready for the onslaught if you decide to go. Somewhere in the vicinity of St Thomas there is also Reggae falls, I haven't been there yet. Head up into the mountains for sure, so many different options, get up high and check out the stunning views. enjoy.
Matt.