Wedding Guest Lists

Are you saddled with an insanely long wedding guest list, but don't know how to tell people they're not invited? A co-worker yesterday told me about how someone she knew cut her guest list by moving the wedding further away. The bride made sure to hold the wedding near enough for close friends and family to make the trip. The couple live in Los Angeles but picked Vegas as their destination wedding spot. They figured it'll solve the problem of telling people like relatives of relatives they're not invited.

Do you think this is a savvy idea, or should the couple have been more aggressive?