Sat Nam! (literally "Truth Name"--a Sikh greeting)

So in my current wip, I've got a scene where a guy raised Presbyterian is going to meet the parents of his Italian Catholic girl. What would be in their apartment that wouldn't be in his house? And where in their apartment would it be? I'm thinking here of a tray of votive candles I saw once in the entry hall of a friend. Time is 1914. Place is fictional Western Oregon.

He's planning on marrying this girl, and her family insists he become Catholic to do so, which he does. Besides the problems with his family (which is part of the point of the book), what will he have problems with both in terms of learning it and conceptually?

Thanks for any and all help.

Blessings,

Siri Kirpal