We may arrive in Charleston on Sat,early am in mid summer and want to be in Orlando Sun. evening thru at least Wed. am. Have to be back in Charleston the following early Sunday morning. Want to see Universal Studios, Cape Kennedy, Charleston, Savannah, St. Augustine. We're parents with 14 yr old girls. Taking train to/from Charleston then driving from Charleston to Florida. Any recommendations/tips on what to do/see along this route, timing, and how to navigate Univ. Studios and the Harry Potter thing? Thx.