When I was 18yo I worked as bartender for a mariage events company. The instructor teached me for literally 30 minutes and told me to go the event in the next day. The place was 7km away from my house so I had to pick a bus to go there. I remember that it was me and other 3 guys to serve 700 guests for the whole night. The event started at 4PM and finished at 4AM. 12 hours straight making drinks for drunk people that I've never seen in my entire life. When the thing finished it was too early and the buses weren't circulating but I was tired af because we had not even a single minute to rest. I slept in the bus stop for 5 hours. I earned R$100 for 12 hours, which is like $25.