FASTPASS - The Ultimate Ticket!

Who knew how much a FASTPASS ticket at WDW would be worth in terms of saving time and energy as you visit the parks (if you know the secret).  When our family used a FASTPASS for the first time we stuck to the exact return time on the ticket.  One time at Animal Kingdom we scarfed down our food at RainForest Cafe' which is at the front of the park and RAN all the way to the back of the park just because we thought we had to ride Kilmanjaro Safari before our FASTPASS time expired.  We made it but not without being stressed out while eating at RainForest, telling the waitress we were on a time schedule and really needed our food/check fast and then running with our child in the stroller and husband by my side as fast as we could just so we could get into the FASTPASS line!  While standing in line for the next ride I overheard a family talking and saying how as long as you used the FASTPASS in the same day most cast members accept the tickets even if the time has expired.  I thought to myself EUREKA!!  Let the FASTPASS fun begin:-)  From then on when we acquire FASTPASSES we are not on a strict schedule and we use them when it fits into our Disney schedule :-)  The only thing you can't do is get another FASTPASS before your current FASTPASS says you can.  Some of you may know how to use it this way but if you have always been worried about getting back to a ride because you think your time will expire try this strategy and let me know how it works out for you!