Local here. Do not plan a launch as your primary visit to Central Florida. The Kennedy Space Center does have a very cool tour, which will undoubtedly be very crowded surrounding a launch date. There are other attractions in the Central Florida area as well, including beaches, theme parks, reserves, and state parks.

Plan your visit around the launch. Make plenty of time to be there for it. You won't get as close as the TV reporters or VIP spectators do, but you will be close enough. There are plenty of beach and intercostal parks that have very good viewing points for a launch. Leave yourself a lot of buffer time around a launch, as traffic is pretty horrible during those timeframes.

There are no refunds on anything from anybody.

You're not going to be paying KSC to watch the launch. You're most likely going to be in a water side park or even a parking lot.

If you come solely for a launch and it's scrubbed, now you're miserable.

My advice is to come visit Central Florida during a launch window , pack a cooler and head to the coast for it. If it's a clear day, you can see the flames from the boosters from Orlando very easily. On good days, you can watch the SpaceX boosters come back down as well.

If the launch is scrubbed, you're pretty much at the beach, so spend the day there with the family. If it isn't scrubbed, watch the launch and then spend the day at the beach with the family.

It's a long wait for a relatively short window, but it's totally worth it. Just make it a potential highlight of your visit and everything will be fine