Personally, I prefer camping in the hotter summer months; as the song goes (or went...showing my age) "some like it hot".
I don't know if you have kids or not but if you do FW is the only place to stay. We take our bikes to ride around the campground. Kids just naturally want to explore and FW is one of the few places they can have a little freedom to do this without having to worry. It's a big place and there are lots of interesting things to do/see that don't cost anyting (a big plus if he is watching the budget); movies at night, sing-a-long, random activities, 2 pools (old fashioned big pools, not the kiddie things they make today), fishing, renting boats, sitting on a sandy beach watching the fireworks, meeting a lot of friendly people, walking through the campground just looking at how beautiful it is, the "free ride" on the boats back and forth to mk/resorts (one of my favorite things to do at night), and there are bike trails you can actually take that go all the way around to visit other resorts.
Also, the social aspect of camping in WDW. Not only do kids have a better chance of making new friends to play with (which we all know makes them enjoy it more and complain less), but adults at FW are in general more social than other places.