I don't think it is an issue of children being in the dining establishment... I think it is an issue of the parents of some of these children. I know that by going to Disney World that there will be kids and I won't whine and argue about that... duh, it's Disney lol! However, just because it is a vacation does not give the parents a right to allow those kids of holler and scream during dinner.
Kids get tired and cranky and will get loud and cry, it is their way of getting it across... but some parents do not take it upon themselves to deal with the situation. Yes, kids get bored and antsy... but that does not mean the parent should allow them to run around and under tables bothering other diners. When this happens, I do make a comment to management about it. My dinner should not be interrupted because some kid feels the need to run around the table and hitting my chair or crawling around under the table.
So, there wouldn't be an issue if the parents would make their dining decisions based off of their children and how they can act during a sit down meal. There also wouldn't be an issue if when the kids get out of hand if the parents would step in to stop it.
Then again, discussing this does little good here... I doubt the parents on this board would be the ones I am talking about lol. Nope, the parents on here would know what they need to do to keep the bad things from happening. Too bad we can't get the word out to the ones who need it.