I want to marry my partner not his family

⚠️OK so please no judgement if anyone reads this and decides to criticise me then keep scrolling to the next post!⚠️ Recently I've opened my eyes and realised my partners family is fucking toxic, and I come from a toxic family but the only people that are toxic on my side are my 2 sisters, whereas it's most of my partners family that's toxic, its come to a point where I wanna say fuck it and me, him and our 2 kids just go and get eloped rather than having a big-ish wedding because I just want to marry him, don't wanna marry his family, and I don't really wanna celebrate our marriage with them, don't get me wrong I love them but I don't know since we had our 2nd child (daughter) they have changed with us, for instance his mam only wants to know me when she needs to rant to someone about her job (she never asks how I am or how the kids are doing or you genuinely convo), his dad everytime we go to see them barely talks to me, and he always goes off to have a joint (I don't care if he smokes it or he does it in his own house whatever, I just don't like the fact he does it when my kids are in the same house then comes down and plays with them, he doesn't sneak off to smoke a joint when his daughters kids are there) 2 out 3 sisters have kids, and the 2 sisters (a&b) always go on days out with each other and watch each others kids but they never ask us , even if they just asked if our 2 year old wanted to go to the park with them (not asking them to watch him or thinking they need to spend time with our kids, I just think it would be nice once in a blue moon, since we always ask them) and sister b is just a jealous cow because she has a 3 year old and 10mnth old both lads and she's always wanted a girl, and because when we had our son (2 year old) he got alot of attention due to his hair mostly and then she wasn't happy to learn we was pregnant same time as her with 2nd aswell, but we had a little girl which sparked alot of jealously (really don't understand why gender matters, as longs the baby is happy and healthy it shouldn't matter if they pee sitting or standing) so yeah I think his family is very toxic, and tbh I've heard stories of when he was little like his mum would fat shame him cause he would have 2 bowls of ceral, she even fat shamed him the other day calling him greedy which I didn't like, his sisters have all chosen wrong men, but they still judge my sisters life choices, sister B and C are known to smoke weed and take coke but yet my sister who only does weed and occasional coke gets judged, at family events they seem to turn their noses up at my side as if my side are scum even tho my mam and dad are amazing parents who's always put me and my sisters first whereas my partners parents would rather pay off their mortgage than buy my partner shoes when he was in school 😞 So yeah sorry this was more of a rant but anyone else feel like they just wanna leave and marry rather than celebrating with family, mean only part that's stopping me is the fact I would love to celebrate with my side of the family a d have my dad walk me down. I just love my partner and just wanna marry him not his family if that makes sense