OED gives us banquet as “a sumptuous entertainment of food and drink”, which will do for the banquets mentioned in Lake-town.  I do think, however, that hobbits would approve of the obsolete second meaning of “a light repast between meals”.

• 10.039 and even after that his speeches at banquets were limited to

“banquet, n.1.” OED Online. Oxford University Press, March 2015. Web. 13 May 2015.