10 Minutes, real easy. Take I-4 East.
You'll pass an outlet mall on the right. Get in the right lane after this. You'll pass a water fall sign for SWF and then exit curving to the right. A couple stop lights, and the entrance is on the left.
If you wanna park for free, turn left at Sea Harbour Drive. This is the 2nd stop light after you get off I-4. Drive about a quarter mile and park at the Renaissance Resort, literally across the street from SWF. Park on the north side, you'll see a huge parking lot for guests. Go inside and check out the Renaissance while you're there, it's a cool resort. They have good rates during the July 4th holiday.