Am bringing my family from Miami to do a tour around the Kennedy space center... what would you say, How many hours do we need to see everything???

I would plan to spend the whole day, because you won't get to see and do everything

Depends on how much you want to see. We took our time in the exhibits and did a special interest tour...spent two days there and felt a little rushed to see everything at the Saturn 5 center (since you have to take a bus to/from there) and shuttle exhibits.

It really depends on what you want to see. If you are a spacenerd you can spend a few days in the center and not get bored. If it is a family adventure, an hour each at the Atlantic center, the Kennedy Space center tour, and the IMAX theater and other associated exhibits should be enough

It's an all day adventure. When you get there go to the bus tour first. It takes you to the out to the launch pads. When you get back you can choose what you want to do after that

At least 5 hours