
One thing that I've thought about recently is the fact that we haven't told our girls that they are going and therefore can't use it as incentive to behave. More than once I've been tempted to say "If you don't act right you're not going to Disney World." Then of course the little voice inside my head says "Don't say that you fool! You'll spoil the surprise!"
How old are they? Mine are 7 and about to be 4, so the mouths are in full effect here too.
Best advice for ungrateful and disrespectful children is a tazer*. Usually only takes once to get the message across.
*Check with state and local law enforcement for legality in your state unless you live in Texas.