I don't know if it's boundaries but I just say no if I don't want to do something. About a year in to dating, she started listing off family birthdays to me, expecting me to write them down so I could be the one to sort family birthday cards as DH is useless at them. I just said "Don't tell me this. I don't even like doing it for my own family!". She means well though. We're not close, and we're very different, but she is a nice woman. If my own mum had been alive when I had dc I'm sure she would have said lots of things that annoyed me too, but she'd have that family history and unconditional love to begin with.
I think MIL would like us to visit more, and thinking about it she used to hint a lot about it, but has stopped. I think she's probably just got used to me/me and DH as a couple and parents, and it's not necessarily all boundaries. I think it's just a mutual respect thing and adapting to how different people live differently, and responding to that. Not all MILs are bad, they're just not used to how things work for the new little family and have to navigate that. Some do a great job, and I guess others try to bulldoze on, and that rarely works.