I went to WDW in June 2004 and I learned one thing:
During summers in FL, people stay inside enjoying the AC and go outside as little as possible. Just like in New England in winter when we stay inside enjoying the heat and go outside as little as possible.
I personally do not plan on going to Florida in summer again.
Think of the worst heatwave you have ever experienced and imagine it lasting all summer!
This isn't said to scare you, OP .... just to know so you can be prepared. As others have said, it is doable, but you will get about 1/2 as much done as you plan to between of the heat and crowds. The weather saps a lot of energy out of you. I read warnings before my trip and thought "it can't be THAT bad" .... but I was SOOO wrong.
During summers in FL, people stay inside enjoying the AC and go outside as little as possible. Just like in New England in winter when we stay inside enjoying the heat and go outside as little as possible.
I personally do not plan on going to Florida in summer again.
Think of the worst heatwave you have ever experienced and imagine it lasting all summer!
This isn't said to scare you, OP .... just to know so you can be prepared. As others have said, it is doable, but you will get about 1/2 as much done as you plan to between of the heat and crowds. The weather saps a lot of energy out of you. I read warnings before my trip and thought "it can't be THAT bad" .... but I was SOOO wrong.
, we go back even later..like 9:00pm or so.
Glad we extended out stay three extra days; being that it looks like we'll be pooped out quite a bit. 
, then walk through downtown Chicago in my business attire, through clouds of bus exhaust in similar heat.
