I don't agree with that. I think that each family is different and vacations differently. It was mentioned that you "won't know how your family/kids will react".I'm not going to quote posters.
Anecdotal observations don't prove anything. I don't put much credibility in figure listed in an unofficial guide book but others are entitled to give them some credibility. High no-shows during January, a month where some guests may need to delay or cancel a trip do to weather issues makes sense to me.
I don't mean this in a bad way but some posters "live in a different world". Some families don't get sick (much). Seem immune to colds, flu, heat exhaustion etc. Kids never get cranky when over tired....
Posters in this category can't understand why everyone isn't like them.
As a family we did not/do not book a lot of ADR's because I knew that my family would not want to be committed to things for the entire length of our WDW trips. We booked a few each trip and looked forward to them.
Believe me, my kids got sick (one year stomach flu, another strep throat, pink eye another time & the list continues). They would get cranky. Heck.......even DH & I would be cranky. I knew from the start to do a park day, then pool day, park day, pool day.
I do understand that everyone is not like me & their family doesn't vacation like us. I guess it's just a matter of what you want to do on your vacation and the style you want to vacation in. We are not a go, go, go family. We want to relax & enjoy & really take it easy.
Our favorite line was always, "It's OK if we miss something because it gives us a reason to come back again!"