The Food and Wine Festival starts October 19th at Epcot so you should have some choices there. Deb's site has some good information on it, including a page listings last years offerings. The portions are supposed to be appetizer size. I know this will not help you every day, but it is an option for a few days.
Morrocco has a counter service restaurant that has a vegetarian platter that I love. We go there for that several times during our trips. I also like Le Cellier in Canada. It has some lighter selections, too.
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