If you're hosting your reception at a different location than your ceremony site, you should consider a few things first to ensure safe and smooth travel for your guests:
DO offer transportation between venues.
Save your guests time and trouble by offering mass transportation between venues. Whether they're tour buses, double-decker buses, shuttles, trolley cars, limousines or even horse-drawn carriages, you should check with a transportation specialist and do your research for options in your area to find a transit method that is right for your guests and your budget.
DON’T volunteer your transportation as a taxi service.
You don’t need to offer your own transportation as a personal taxi for every guest. If certain guests need to get back to their cars at the ceremony site, then your driver may be able to take them, but you’re not obligated to pay the driver for individual home drop-offs.
DO arrange for guest parking at your ceremony site.
It’s your responsibility to make sure that there is appropriate parking at your ceremony site where the shuttle is set to take guests to your reception venue. Your guests shouldn’t have to worry about where to park, they shouldn’t have to pay for parking, and they shouldn’t have to stress about the safety of their vehicles.
DON’T let anyone drink and drive.
Since many people tend to drink more if they don’t have to drive anywhere immediately afterward, some guests will interpret the group transportation as a cue to get hammered. Aside from your obvious concern for individuals’ safety and well-being, snatching away a drunken guest’s keys is in your best interest as well. If, God forbid, a guest were to get into an accident after consuming alcohol at your wedding, you actually could be liable for the damages, particularly if a lawsuit followed. Since you can’t monitor every single guest who drinks at your wedding, the best way to protect yourself and your family is to make sure that your bartenders and servers have liquor licenses and vendor insurance. You may want to get a liquor license of your own, and you should look into wedding insurance, which would cover claims of this nature.