as PER eMPEROR'S ORDER,THE COOKS AND BUTLERS GIVE GULLIVER FOOD AND DRINK THE VEHICLES.highlight the sense of comic in this event?

As seen below, Gulliver's provision for food were originally considered dangerous due to the sheer magnitude of the amount it would take to feed him. None-the-less, when they realize he'll protect them, things change very quickly. The irony comes from the fact that protection still doesn;t protect their food supply.

"In the mean time the emperor held frequent councils, to debate what course should be taken with me; and I was afterwards assured by a particular friend, a person of great quality, who was as much in the secret as any, that the court was under many difficulties concerning me. They apprehended my breaking loose; that my diet would be very expensive, and might cause a famine. Sometimes they determined to starve me; or at least to shoot me in the face and hands with poisoned arrows, which would soon despatch me; but again they considered, that the stench of so large a carcass might produce a plague in the metropolis, and probably spread through the whole kingdom."