Ancalagon
Dusty Dragon
I take a slightly different approach. If the party goes drinking, I ask how drunk everyone gets. Based on their answer, I might have some pcs make a Con save in the morning to avoid being poisoned. The DC is usually 10, unless the player said that her character got uberdrunk, in which case it might be higher, and the condition usually lasts a while, again, based on how drunk they got.
Also, everything else being equal, a higher-Con character will pay more to get to same level of drunkenness as a low-Con character.
Warhammer FRPG (2nd ed) had clear rules for consuming alcohol. Heck, there was a skill named "consume alcohol"
Sheesh get your act together 5e...