A wedding transport plan is really a timing document. The vehicles are the easy part; the sequence is what separates a calm morning from a frantic one.
We build every wedding schedule backwards from the ceremony, then add fifteen minutes to each leg that involves guests who are not in the wedding party. Hair and makeup runs late more often than not, so the first vehicle arrives before it is needed and simply waits. Shuttles for guests run on a loop rather than a single departure. And the getaway car is staged out of sight, engine running, from the moment the last course is cleared.