I would be surprised if, in this day and age, the Korean pilot demanding a drink was made seriously. I did fly the 747 with KAL in the mid '90s and did witness the second captain enjoying wine with his meal before proceeding upstairs to operate the second half of the 14 hour flight. Appropriate action was discretely taken. While flying the 747 for AF in the early '90's, a wee bottle of wine was always present on the tray when my crew meal was delivered to me on the flight deck. It would have been churlish to refuse, so it simply disappeared into my flight bag.