I piped once for an Indian/Irish, Catholic/Jewish wedding once (no; I'm not kidding). The bride was Indian and Catholic, the groom Irish & Jewish, they had a priest and a rabbi tag-team the service, then Mazel tov! In addition to my usual Irish repertoire, I piped Hava Nagila for them. With myself in my kilt & caubeen and wedding guests of every conceivable color, many in Sikh turbans, saris, or sherwani coats (and several yarmulkes), it had the flavor of a convocation of the UN. Both families were fantastically wealthy; I distinctly remember how the Indian folks would smile in the most open and friendly way to me, and the Americans completely ignored me like I was a servant holding the door for them.