If the sister wants to do the Vegas wedding to the hilt, she should do the Elvis at the drive through wedding. That'll be cheaper without getting all the family involved.

Maybe, you can talk her into the drive through if only few can make it. And have a reception back home where everyone can get together.

And hope that she comes to her senses. Idea of Elvis and drive through may be enough to convince her that Vegas wedding isn't a great idea. I just don't see any appeal of Vegas.

Yup you can't choose your familia!