We visited this park before 10 am and thanks to an internet coupon got one ticket free. Also did not have to wait for the airboat ride -- was one of the first to go. Had a friendly guide who showed us whatever he could find-- gators, turtles, fish. The show back at the park was OK -- saw gators and a scorpion up close. Also say a bunch of ducks and birds running around the area.
As we were leaving (takes about 2 hours) we saw people from buses lining up for everything. It was also very hot. Our advice is -- drive if you can and get there early (they open at 9). It will be cooler, less wait and more enjoyment.