1 day coach trip from Miami to Busch Gardens???

One option is to take a greyhound bus to Tampa and then a local bus or cab to the Gardens. But, the trip takes 8-10 hours. The cost is $42.00 - $49.00 one way. You can also take the bus to Orlando (5-6 hours, $55.00) then take the Busch Garden shuttlebus to the park (1/12 hours, 10.00) (see the Busch Garden website under "directions"). No matter how you look at, you will have to spend the night in a hotel near the Gardens