Atthebanquetofwine - Postquam vino incaluerat, after he had been heated with wine, says the Vulgate. In such a state the king was more likely to come into the measures of the queen.
Matthew Henry
Concise Bible Commentary
If the love of life causes earnest pleadings with those that can only kill the body, how fervent should our prayers be to Him, who is able to destroy both body and soul in hell! How should we pray for the salvation of our relatives, friends, and all around us! When we petition great men, we must be cautious not to give them offence; even just complaints must often be kept back. But when we approach the King of kings with reverence, we cannot ask or expect too much. Though nothing but wrath be our due, God is able and willing to do exceeding abundantly, even beyond all we can ask or think.
SDA Bible Commentary (limited)
Volume 1-7
2. The king said again. For the third time Ahasuerus invites Esther to make her request known. By now he must have been curious indeed to learn what it might be.
At the banquet of wine. Literally, “in the drinking of the wine.” This indicates that the main part of the feast was over at the time the king again raised the question.