I see it all the time. I've helped out a friend who's a wedding coordinator and no matter how hard you plan - some things just don't happen. Weddings are huge events and with some brides who are on a budget, we often struggle with not being sure of whether or not we need more people or extras. As a coordinator for people and events, what have you found to be the best to prevent disasters?
I think it is important to dot your i's and cross your t's. By that I mean that it's important to pad your work with a little extra to cover the unexpected (whether that is to have money, product, seating, help, etc) and to have a honest reality check with whomever you are dealing with.
It is imperative to have a plan for every event. Creating action plans is imperative to success and forecasting disaster. Communication is the most important part overall because you need to be responsible enough to check in with ALL parties to cover the numbers, event details, schematics, and time frames. Keeping a strict schedule or agenda and sticking to it is imperative for success. Treat your event as if a disaster WILL occur and there will be no worries because you will have already thought ahead to the possibilities.
Oprah Winfrey once said, "Love is in the details," so if you are detailed and have passion for what you are doing, all will work out well because you will be prepared. If disaster does strike, follow your plan and make adjustments as needed, but remember to make notes for the next time because every situation is also a time to learn and grow. When you think of your event, know there is a lesson and a blessing. Find both, learn from it, and you will find disasters are not what you once thought they were.