I have registered a relay team but am not sure all of my runners will make it to the race. What should I do?

One of our past team captains came up with a great suggestion. Tell your teammates up front - before there's a drop out - that they need to treat this like it's their wedding: plan to be there no matter what; don't get sick or injured, and don't have emergencies! It of course sounds absurd to say "don't have emergencies," but think about it - the number of brides and grooms who don't make it to the church is infinitesimally low.