THIS! ^

one would be amazed how much this can help in delays and cancel events. Gate agents and phone agents cant hardly know every option. Make yourself an expert of your own routing particularly if connections are tight or you arent very flexible with options. Seconds and minutes count in rebookings especially when its a cancellation with 130 people standing around. If you can talk to the GA or phone CSA and "assist" them or inform them of available options you may let them know or help them find a flight they didnt even know existed or at the least help them speed up rebooking you before the seat is snagged by another person. Depending on what the connection is, having other options at your quick access could be alternative modes of transit, IE bus, rental car, or rail. Obviously not useful for LAX to Mexico but it is on a connections of a few hundred miles and you cant sit around over night waiting