Of all the things you've thought of and planned, I sure hope that your get-away isn't taking a backseat. Definitely make it a priority (at some level) to ensure that your bridal get-away is done with the same vibe and gusto as your wedding.
That means, take care to contract with the right limousine company in terms of service, destination rates, and of course, THE VEHICLE!
For the swanky type, your get-away could be a helicopter. Hope you've got $$$. Dramatic exits like that can cost the mint, especially if you don't want it to look chintzy.