My ex dh and I share a ds13. Ex and ds have a shared interest - let's say it's a particular band they like to go watch (it's not, but similar).
Ex has been taking ds to a LOT of events/concerts. Sometimes they fall on my contact time but I'm flexible about it because I know it's something ds enjoys doing. However it's becoming more and more frequent, involves a lot of travel and often means ds gets home really late, sometimes early hours of the morning. As a one off I didn't mind but it's becoming very regular and I worry that ds is doing too much. He's knackered the next day and has even missed school a few times because of it.
Ex also seems to expect me to wait up until whatever time they get back so he can drop him off (there's always the option for him to go back to his house but this just means more time away from me and a faff getting him home for school early the next day). So more often than not I'm knackered the next day too. I have 2 little ones who get up early.
Ex isn't the most approachable and any attempt to communicate the concerns I have and inconvenience it causes me will probably not be received very well. Aibu to be getting pissed off with it? I wouldn't want to stop ds doing something he likes but I'm not sure it's in his best interests for it to be so often.