Hi, I have a short time to photograph anywhere from 40-130 people who will be lined up at an event. Some photos will be of couples and others of singles. The event host wants the names/addresses of the people to send them prints. What is a failsafe method of properly identifying the guests? I was thinking of having each group/individual hold up a pre-printed letter paper with numbers 1-150 printed in large, bold text. once they have their photo taken they go to an assistant with clipboard to write their address down. I am thinking of handing guests the numbered sheets as they stand in line so they can write their address down on the sheet with the numbers on it. Any suggestions would be welcome. I have about 30min-1 hour to photograph as many people as I can so a streamlined fail safe system suggestion would be really appreciated. Thanks.