Plan ahead. Make sure there's always a Designated Driver (DD) around to get everyone home safe and sound. Have plenty of water, juice, pop and Mocktails as DD’s drink no alcohol. Depending on the size of your party or gathering, you may want to enlist several DDs.
Be a great neighbour and let your neighbours know you’ll be hosting a party, especially if it’s an outdoor gathering. Ask if it might be possible for guests to park in their driveway or if they are away, use their parking spots. That way your guests don't need to worry about getting ticketed or towed if they have to leave their car behind.
Be firm. Let your friends know that you can't let them drive home because you care.
Don’t be embarrassed to call someone on a friend’s behalf for a safe ride home.
It’s a lot easier to convince someone to take a cab if it’s already arrived.
Be discreet and calm. It’s always better to pull friends aside to talk to them in private.
If you feel awkward about asking for their keys or persuading them to take the cab you’ve called, enlist someone else’s help.
Don’t give in. Insist that your guest takes another way home.
Be prepared to call the police for help. It’s tough, but it could save lives.