Like....
But perhaps also....
- Seriously limit the number of empty kegs each character can refill in a day to avoid abuse. Even as low as 2 or 3 kegs a day?
- A message or rumour to adventurers within a close vicinity of the region (if they have enough adventuring skill to overhear the rumour) announcing the nearby festival.
24 kegs isn't much to be honest. Thats like 60 fatigue. You will run through kegs super fast.