@artemis As a very introverted mostly-neurotypical: I try not to go out if I feel I'm going to get tired before implicit social rules say it is okay to leave. When I'm out, I want to be alert and able to expend energy and be my best self among my friends. When I feel myself getting tired, I leave as quickly as possible, because my ability to be agreeable and socially pleasant will quickly deteriorate.

This requires some planning. If I slept badly the previous night, I try to fit a nap into my day before going out. Worst case, I cancel. Real friends who know me well understand this, and I'm blessed to have them.