ref, if you regularly go to bed before 4 a.m., bartending might not be a great fit . . . Daytime bar can be good, particularly if the bar is in a place that does brunch (huuuuuuuuuuuuuuge moneymaker). Those shifts can be tough to get though, as they're desirable. A day bar shift in the winter? Probably not even worth going in for.
Lol. I can be either a morning person or night person; I've been both. I think I could be flexible. My job and refusal to get stuck in rush hour traffic means that m-f I'm up before six. I value 8 hours of sleep because I've lived in a world where four or less became my norm. When I get sleep deprived it's very easy for me to hallucinate or hear things. That's why I go to bed so early. If my job changed I expect I could adjust although it would take some time. I just need my sleep on a very literal level. I get very ugly when I'm sleep deprived.