Every live event needs to keep people actively involved. Ice-breakers, play a vital role in live training, yet if done badly, they can have a negative effect on group morale. When running live
events, some sort of ice-breaker should always be run, even if people already know each other (if everyone knows each other well, you can combine the ice-breaker with personal objectives).
Be mindful of time though…with large groups ice-breakers can eat into your time, so make sure that you keep them pacey.