if it is a once in a lifetime trip - wait. That also goes for YOU as well as for the kids. You will enjoy the trip more if the children aren't so small that they limit the time you can spend in the parks without rest breaks. Believe me, if you DON'T take the rest breaks with that age, it won't be fun for anyone. Actually the 3-7 age group probably finds the parks more magical than the older kids. But, the 2 and under group gets tired easily and aren't really old enough to appreciate the World. Of course, keep in mind that this is a general comment. "Your mileage may vary." What I mean by that is that different children mature at different rates, and what one 2 year old would be mature enough to enjoy and appreciate, another might not. Do your children ask lots of questions and seem to be observant of thing around them? When you are at malls, do they look around at the displays and the other people in the malls? Or do they kind of keep to themselves and ignore the surroundings? This will give you a clue to what you might expect at Disney. So, what I am saying is that although some people may have had positive experiences with their children at age 2 at Disney, that is not always the case.