We're starting to think about our next trip. We can either go in November when my youngest will be 12 months or wait until May when she will be 18 months. I'm leaning toward May but looking for opinions from people who have done Disney with a 12 month or 18 month old.
I'm concerned she'll just be walking in November and will stumble her way around Disney. But if we wait another 6 months she'll be able to walk without falling as much!
Opinions?
Also I've never been in May - are the crowds light?
We just got back from a two week May trip, and I have never seen it so crowded in May before! I think it is becoming a much more popular time to go. However, it's nothing like the crowds around Christmas. Other people who were there at the same time thought it wasn't crowded at all though

So, I don't know what to tell you about which is the best month. It can be HOT HOT HOT in May, or it can be very mild, like the weeks we were down this year.
I have also had experience with taking children of many different ages, 4 months, 12 months, 18 months, ..... My daughter was just starting to walk at 12 months, so it was actually nice because she did not mind being in the stroller. Which I feel is the safest place for young kids at a crowded park. You dont' want them wondering off, and strollers usually have a sun shade so they don't get so hot or burned. And, don't underestimate the importance of being able to stow your stuff in there! At 18 months, they are fighting the stroller thing more (at least mine did!) and they want to run around where they want. My recommendation would be to go when she's 12 months.
That being said though, my kids have loved every trip they've taken, no matter what their age!