You get differences amongst Muslims too.
My mums side who are Punjabi don’t wear burqas or shawls, just normal salwar kamiz with a chunni/dupatta is considered modest enough…
I know some urban Punjabis wear burqa/chador but the rural Punjabis (who make up the vast majoirty of Punjab) do not.
Whilst in the region my Pathan paternal family come from wearing a burqa or chador (like big black Iranian shawls) is considered neccesary.
When my mum and paternal aunties visit my maternal family they just wear shalwar kameez but when my maternal family visit my paternal areas they wear chador.
Obviously it would inadvisable for a Muslim man to marry a woman who isn’t going to accomodate slightly and allow for his kids to be brought up Muslim.
I wouldn’t normally think it a good idea in a predominantly non-Muslim society for a Muslim man to marry to non-Muslim woman, even though it would be allowed by Islamic law, it would be inadvisable because if there’s a divorce then the wife will have custody of the kids and she might take them away from the religion.
But not all non-Muslim women are like that, there’ some who respect Pakistan/Islam more than Pakis/Muslims do, Mama is a great example, her posts are always so sweet and heartwarming, verizon is a lucky man.