As iansums said two weeks is not enough, but who goes on holiday for a month!
and there is always next time.
Have to agree with so22saint Five Guys Burgers are the best (and cheep) and buctootim Lone Star Stackhouse is another good place to go.
Work out a plan of the things you and the kids want to do, then work out how best fit them in to the days you have in the parks or the beach or shopping.
Always remember that day one in Florida will start very early in the morning (average kid gets up at 6 or 7 in the morning uk time, take off the five hours time difference and you have an early start to the first day). Then by early evening they will be ready to go to sleep, it take;s 3 or 4 days to get any thing like normal in my experience. So planning to go to the Disney fire works on the first week might not be a good ideal.
We first took our kids 20 years ago and this year we will be doing the family holiday again. Meeting up with family from the US and taking the third generation from the UK for the first time. We don’t go until July but the grand daughter has been doing the Disney interactive tour of the Magic Kingdom and planning who she wants to meet.
Excited that’s probably an understatement (and that's the wife).