Of course, Vela presents one very "valid" reason for the lack of attendance at a wedding. In my experience, it seems more likely that the person can't be bothered to attend the wedding (it is at a church, too staid, too dress-uppy), but, bring out the free alcohol, and the person is there.

I think it is rude, and more of a thing with the younger set. I couldn't imagine attending a celebration honouring the newlyweds, when I couldn't be bothered witnessing the ceremony.

Just my .02.