A feast, or an occasion on which people or animals feast(noun)
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Use "feasting" in a sentence
"In Cholula, many families opt to attend the Misa de Gallo, the Christmas Eve Midnight Mass, and do not begin feasting until afterward."
"I am sticking this recipe in my cap — it will be a nice treat to have after all the feasting is over and we head into the lean months."
"Why then, when a burst of hiccups interrupts the feasting, is the mood as it must have been, aboard the engine-less Jumbo on its precipitous descent?"