Unrelated to anything else I've posted on this thread: when the Wood-Elves were shown bringing food supplies to the starving Laketown survivors, it looked as if the food shipment consisted almost entirely of ROMAINE LETTUCE! This is going WAY too far on their vegetarian-elves idea. People facing winter in a cold climate need something to eat with some CALORIES!
I don't clearly remember anything about hunting parties in The Hobbit, but from what I do remember, none of the races of Middle Earth was entirely vegetarian. In The Silmarillion Beren resorted to a vegetarian lifestyle while hiding from Morgoth because the birds and animals of the area had helped him. His decision is treated as unusual, and he seems to have resumed eating meat once he moved from that area. Later, I believe he either hunts with the Elves, encounters Elves hunting, or both.