Missme, I am MO. I lived in Brooklyn as a single girl. I asked my local Rabbi about using the eruv and was told it was halachically OK.
My husband grew up in Brooklyn and his family held the eruv was not ok. We discussed this with our Rav before getting married. I also didn’t necessarily adopt my husband’s leniencies in certain areas.
We all recieve different piskei halacha. I follow mine, you follow yours.
I also have friends that did not take on Chalav Yisrael when they got married to men who did.
Not everything is so cut and dried.