General Tips:
1.- Keep Cool: drink plenty of water and gatorade/powerade. We usually bring washcloths and dump them in cold water and put them around our necks. Don't wait to hydrate. I've seen plenty of people just collapse because of dehydration. Heat in Florida is no joke. Bring a dark (black better) umbrella and use it while waiting for characters, parade, anything outdoors
2.- Make a plan: prioritize, what do you want most of all out of your SWW day. And work from there. It's impossible to do it all in one day so don't let that ruin your SWW experience.
3.- Be patient: there will be thousands of people going to SWW that want to do the same things you do. Be patient. Be polite. I know the heat and the waiting can get to you sometimes but take a deep breath and just listen to that Star Wars music in the background and chill.
4.- Be flexible: So you made an awesome plan and you're ready to take in the day. And, of course, it rains just as the parade is about to start. Don't let that ruin your experience, just go improvise, have a plan B...and C and D,...
5.- Know your kids: There's nothing better than a picture with your toddler and Chewbacca, but some kids get a little affraid of the big Wookie. Don't force them to meet a character or go to a show (JTA Vader, Ventress and Maul can be intimidating) The characters WON'T break character, don't expect a hug from Vader, or Aurra Sing to smile...Villains stay Villains even if your child starts crying. What I usually tell parents is to show the kids the character before waiting in line (sometimes very long lines) and ask them right then and there if they want to meet them. Or show them videos of JTA and ask them before the trip if they want to battle the Dark Side.
On the same note, know your childs boiling points and don't wait for them to get to them. Again, it's really hot during SWW, and meltdowns happen even to locals. Kow when your kids need a break, go inside somewhere (Animation building and One Man's Dream are perfect for a break) eat and hydrate, and you'll have more energy to takle the rest of the day.
6.- Have Fun!! In the wise words of Master Yoda: Do or do not, there is no try....