I live in Kendall (sw of Miami) and I go to the parks like once every 2-3 weeks, I must have done this drive hundreds of times.Depending on traffic and what expressway you take the drive can be like 3 hrs to 5 hours.I've gotten from my driveway to the Kissimmee exit in 3 hrs and 10 minutes on the turnpike.many people who don't want to shell out the tolls the entire drive would take the turnpike to Ft.Pierce(exit 152 )coming from Orlando and then get on I-95 to Miami doing this would save you like $8.On the turnpike you get a ticket south of Orlando, if you get off at Ft.Pierce you pay $8, if you go where they collect the ticket it's $13.70 and then there would be like 3 more $1 tolls until you get to the area around Dolphin stadium.