We went the first weekend of October last year, my boyfriend and myself.
The good -
Not a whole lot of crowds. Wait times are hardly anything, especially for the great thrill rides like ToT, RnRC, Space Mountain. I think this is due to in part most people there either have pre-schoolers with them since school is in session and others are senior citizens.
Weather is beautiful. A little warm at times, but its Florida, what could you expect? And the entire time, it rained for 15 minutes on one day.
Got an AP discount for $99 a night, Port Orleans French Quarter, water view.
MNSSHP. Enough said.
Conventions seem to add to the low park attendance. Many resorts were full, but no one was in the parks because they're all conventioning!
Its easier to get the front of the monorail with low attendance. We rode three times.
The bad, and the only bad -
Park hours are too short. We had to attend MNSSHP just so we could see MK at night! But it does leave time to resort hop and such.