I was there last year at the Boardwalk around Halloween for 4 days (weekdays not weekends). And no it wasn't crowded at the hotels or at Epcot either. Granted, towards meal time, you'd have some people in lines at the booths but not usually more than 5 or so. Others may differ. And I NEVER would wait an hour in line for ANYTHING including any and all Disney attractions. Half hour is pushing it.
That being said, getting reservations and a good rate at an Epcot hotel may be a bit more difficult during this time. I recall no availability whatsoever at the Swan and Dolphin (big convention time), rack rate at the Yacht and Beach, and somewhat lower than rack at Boardwalk but no great bargain like they have running now until the end of September. And this was with an AP and Florida resident status(father).
On another note, the Food and Wine festival is absolutely fantastic and I'm going back for more this year. I haven't made plane reservations to fly down unitl I can get availability of a room. I want that flexibility so I am one of the multitudes awaiting October AP rates.