I don't think they're being materialistic. I think we all know that the blending of families is an important part of marriage. Anyway, I don't think they know anything specific that sounds problemstic. The families just have different styles, and when interacting they should be open-minded.
read her post again, blending of new person is different, calling them "not very dignified, not very presentable" is more like third class thinking.
explain to me what is "not very dignified/presentable" what they are "achoot"? or it's the guys family who are having nightmares, what if the lady parents come on rikshaw .. what the people will think, crap people. More like a newly-rich !