Background: Me and my partner are both in our 50s and have been together just a year. I don't have any children, he has 3 in their 20s. One daughter lives away, the son used to split his time between his mum's and his dad's house, but now spends most of the time at his mum's because his girlfriend moved in there with him, and the youngest daughter lives with him when not at uni. I moved in with him at his house last summer. I have my own house, and while he has made me v welcome at his house, it's obviously not my house, and I don't feel able to set any kind of agenda when it involves his kids (not that I particularly want to). He loves having his kids there, it happens less often now as they make their own way in the world.
At Christmas 2 of them + girlfriend were here most of the time. Things got a bit fraught. The son (25) spent 95% of the time watching tv, and his Dad ran around making meals and clearing up. I also spent a reasonable amount of time clearing up etc, mainly because I didn't want my partner to do all this on his own, but because I don't expect anyone to do this for me. After they'd gone back to work/uni we discussed what had happened as my partner said I had switched off during that week, and initially I was reluctant to find blame with his kids, but eventually said I'd found it difficult to watch him skivvy around, and had also felt annoyed that I was constantly clearing up for them. I didn't consciously switch off, but in hindsight I probably did.
Yesterday, Father's Day, the son turned up at midday, the younger daughter on the Sat eve, and had a hangover most of the Sunday. My partner does a BBQ, and I do all the prep like salad, buns, crockery etc. Everyone eats, presents given, nice time etc. After that, they just continue to sit around while I clear up with partner.
AIBU to think they should help out with something/anything, especially on Father's Day? My partner has gone away early this morning for a few days, which means I will have to raise it later in the week if I want to discuss it again, feels confrontational. What is my role expected to be when entertaining his kids? Should I just suck it up on the basis that these get togethers will be infrequent as time goes on?