Check out MousePlanet's WDW updates for a good start.
You're confusing a lot of things, though. The Food and Wine Festival and
MNSSHP are both events that take place from the end of Sept. through the end of October. The coupling of these two different month+ long events has led to an increase in overall attendance in October. October used to be "slow", it's not any more; it's not even "Value" season at WDW in terms of resort pricing, but "regular" season.
Jersey week is some extra vacation schools in NJ take...not sure of the dates. Google it perhaps. October is just generally a mid-level crowd month now, instead of low as it used to be. It's still nothing like summer or holiday crowds.
There is stuff like this year 'round, like Super Soap Weekends in November at MGM studios (where you can wait in line for eight hours for a CHANCE to get an autograph from someone like Susan Lucci), or the Star Wars Weekends every spring also at the studios. Gay days are in June, Marathon is in January...there's always something going on at WDW, offically or unoffically. Most of them don't have a great impact on crowd attendance;
The best advice is to plan around any *major* event, but then just get over it and go have fun. We spend so much time obsessing about crowd level predictions and such that we forget that even when it's busy, effective touring (getting there early, namely) can beat it all. Educate yourself to make sound decisions, but don't make decisions based soley around special events that may not even affect you at all.
For example, if you go over Super Soap Weekend, just don't go to MGM those days and choose another park. Jersey week doesn't increase crowd levels incredibly, just that a larger percentage will have that Tony Soprano accent as you walk around the park. Same for traditional holiday's in the UK, or Austrailia, where you will find a larger percentage of people from those places, not necessarily more people in general.
You'll be fine. Good luck!
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