We pick this up Summer Saving Pass up every year. It is a great deal, you get unlimited admission to four different attractions. The Museum of Discovery and Science, Lion Country Safari, Miami Seaquarium, and Miami Metro Zoo.
We went to Lion Country 2x, and Miami Seaquarium. We spent a great deal of time at The Museum of Discovery and Science on those stormy summer afternoons. You can pick up the pass at the gate at any of the 4 attractions.