Great feedback, @mathewehrl. I'm the lead on all of our social accounts and always encourage (& ask) other staff who are submitting photos to be shared in social for at least a start to the post copy.
For us, after-hours and weekends management is more about monitoring audience comments, questions and DMs. We have a team of 4 who have access to accounts and we rotate being "on-call" for coverage beyond standard business hours. This support from my teammates has been immensely helpful for me in finding a bit of work-life balance.