Extended uncles and aunts are always going to be judging you, that shouldn't really matter Whether you are married to an Indian or not, if you are American/Japanese, you are always going to find someone ogling at you.Holding your hands with another Indian, you are going to get looks when you are walking on a park or in a mall Are you in Danger?
It is kind of hard to generalize ' Indian society' as such.
So to have an outlook of how any opinion transpires in the 'general Indian society' is much harder.
Inter-religious and Inter-caste marriages has always been a subject of debate over a long time in India.
Nothing has stopped it from happening before, and nothing will stop it happening now.
If you are an Indian from a more urban society, or married to one, or intend to marry one, you will always have a social circle who will accept for who you are.
Mildred and Richard Loving were a mixed race couple from Virginia who were arrested by local law enforcement in July 1958 for violating the state's Racial Integrity Act of 1924 which prohibited White-Black marriages.
To add insult to injury, they were told that they had to leave the state for a minimum of nine years in order to avoid prosecution and imprisonment.
However, you are going to find a group that is going to resist this idea (for that matter, you are always going to find a group that will oppose any idea).
I know there exist a little social tension when it comes to Hindu-Muslim marriages.