I always pictured the night before my wedding as a big girls sleepover with all of my BMs. I quickly realized that my MOH has back problems and she needs her special mattress and such to sleep otherwise her pain is worse. Totally understandable. One BM is a single mother to her 3 year old, she can't leave her child alone overnight. Totally understandable. One BM lives with her FI and her parents and she needs to stay around to be the buffer otherwise they bicker. Totally understandable. FSIL and her bf are going to be staying in a hotel and she didn't want to leave him and wants alone time in a hotel with him. Totally understandable.
That leaves my sister... originally she was going to sleepover with me at our parents' house, but now she can't because her husband is taking her step son fishing (it's a big tournament) early in the morning and their child together (the RB) will be left alone and he is too young for the derby. So she can't sleepover

I'm annoyed because her husband is explaining that he never gets to do things with his kid. Yea, he spends more time with his mother, but fishing is the only thing they do together. He has plenty of opportunities to bike ride, play catch etc. with his son, but chooses not to when he is with him.
I don't not like my parents, I just never imagined my last night as a single girl spent sleeping at parents alone like an only child