I have a friend who did somewhat the same thing. Just realize that not everyone will travel. It's good you're giving notice. Make sure to have a reception when you get home, so that the folks who can't go still are involved.

Other than that, I'd follow Kanye's advice from Gold Digger or Vince Vaughn's advice from Old School. They'd be, "Holla we want pre-nup" and "*cough* don't do it *cough*".

Have a fun time.