I was there last September right after labor day and hot does not even describe how hot it was. It was near 100 every day with near 100% humidity, and it rained every day, and some days almost all day. It was so hot that by the time you left your room and walked to the bus stop you felt like you needed another shower. I don't know if we encountered weather that was stranger than usual for that time of year or maybe I am just getting old. I had not been to WDW in 10 years but always used to go right after labor day and don't recall feeling that hot and sweaty in the past in September. And yes we were also there for the free dining (it was a total coincoidence since that is when we were planning to go anyway and this was just a very nice surprise and bonus) and the parks were very busy (compared to what I was used to for this time of year, but probably not too bad in the big picture) and so were the sit down restaurants obviously. We waited over an hour for Le Cellier. It was just me and my mom so it was not that big of a deal, but if I had the kids with, we would have had to leave since they would not have tolerated such a wait. Most other restaurants were pretty quick though. It used to be so quiet there in September since in my past experience most people don't take their kids on vacation missing the first day of school, but I guess that has changed too. I am thinking of taking my 2 kids for the first time this year too (ages 2&4), and we plan on going right after Thanksgiving.