Working hours of hotel bartenders

the business hours of normal bars (including but not limited to whisky bars, cocktail bars, beer bars, wine bars and music bars) are usually from 17: to 2:, and the business hours will be extended to 4: in some cases. Bartender working in this place usually turns upside down in the middle of the night. I go to bed at 5 or 6 o'clock every morning, and the time of getting up varies from person to person. I am used to getting up at 14:, taking a shower and making up before going to work. Usually, my colleagues eat at around 19: every day. Generally, they only eat this meal. If they are hungry after work, they will have a snack.