You can also save 10 percent if you buy your tickets online and print them at the Busch Gardens and Sea World web sites. You don't have to stand in-line at the gate either. This is a greater discount than the $4.00 coupon .
Pepsi has specially marked cans for $10 off. I hear it is only for GA and FL residents though. Might be worth trying anyway. Just have to buy Pepsi in the Orlando and Tampa area.