We took my daughter and niece in September, my daughter was 5 and my niece had just turned 2, and I thought they were both fantastic. My daughter was a little apprehensive with the characters initially where my niece ran right to them. Both of them had huge smiles on their faces the entire time and I'd do it all over again a hundred times if I could. We did bring anew umbrella stroller for my niece and my daughter ended up in it a couple of times (on our Epcot day, I don't think she'd been drinking enough and was complaining of a stomach ache; and after MNSSHP because it was easier to carry the sleeping 2 year old then the 5 year old. Haha), but she walked for the vast majority of the time. We did have to take breaks in the afternoon as the week we went it was in the mid 90s and HOT, but we luckily got to do almost everything that we'd hoped to. I think it depends on the kids though, my daughter and niece are both really chill and are really good at listening (usually), but I wouldn't have taken them if I didn't think they'd be good. We're going again in March or April with my daughter and our baby (due in October!), so once I get home I can let you know about super little ones. Haha.