John Gill Commentary Judges 19:6

"So they sat down, and did eat and drink, both of them together: and the damsel`s father said unto the man, Be pleased, I pray thee, to tarry all night, and let thy heart be merry." — Judges 19:6 (ASV)

And they sat down
Not only sat down upon their seats again, the Levite having rose up in order to go away, but sat down at table:

and did eat and drink both of them together ;
both the Levite and his father-in-law; and it appears by this, and what follows, that the Levite did not take only a short repast, or breakfast with him, but stayed and dined with him, when they ate a plentiful meal, and drank freely after dinner:

for the damsel's father had said to the man, be content, I pray thee,
and tarry all night, and let your heart be merry ;
let us spend a pleasant evening together, in drinking freely, though not to excess, in cheerful conversation, and innocent mirth. This he proposed to him, and hoped he would agree to it.