Parc Safari. We just went last weekend. Need a day. Get there as early as possible. It opens at 10am.
Old port (neare chinatown as well, we ate at Jade Buffet, not bad), be careful parking 1-6pm not free. Don't park at the place with reserved sign and a number.
We happened to a firework. My son likes it very much. Start at 10pm.
Saint Joseph, only if you are interested in Jesus.