I've been to .Disney .World 9 times. Only problem being, 8 of those times were before .I turned 4, so .I don't really remember that much. We've also never had to pay to get in, because someone in the family has always worked there. Most recently was my cousin, who was .Pluto, .buzz .lightyear, the .white .power .ranger, .aladdin, .peter .pan, and then various .princes if someone called out sick.
I'm glad that I got to go again when I could remember it. It was really cool meeting all of the .disney characters .i idolized when .i was little. The only awful part was when we got stuck on the ride it's a small world. for two hours. that was the most awful experience of my entire life to date.
I'd honestly wait until your kids are old enough to remember it, if financially it's a once in a blue moon kind of thing. Just my opinion, though.