I am getting married in August but Im keeping my ears open for good music for the reception. Anyways, I thought a little Opera as guests arrive would be a good touch. Lately I have been looking at Placido Domingo. He has wonderful tenor vocals that are beautiful. I got his new album "Italia, ti amo" recently and I fell in love with it. His music has a classic Italian ballad feel to them, and very romantic. I first heard the album at my internship with Universal, but bought it later because I thought it was perfect for weddings.
http://www.iclassics.com/artistBio?contentId=243 has more info on the album. I think its what Im going to use.