Not sure if it counts as a headcanon since I think there's a lot of evidence pointing to it, but I think Kota is almost as big of a pervert as Luke, he's just more discreet about it.
Luke has probably gone to TFF or ACFI to get laid.
When I initially started playing the game I assumed the reason the hotel couldn't produce salt was because salt was once used as currency in ancient Rome. However, it's later stated to be because salt has mystical properties so that headcanon was wrong.
Kota did not put piss in that beer. If he did, it would probably improve the flavor.