It happens, it will continue to happen, despite the best of efforts. Do not remove the bottom portion-tear pull tag. Do not pin the tear tag, pin only the large number to your shirt. All your personal data is keyed to your own assigned bib number. At many races, results are delayed because people have inadvertently switched bib numbers with their children, spouses, team mates, friends.
Time waits for no one.
Buy books, magazines on the sports you will participate in. Try to remain calm and voice your problem, complaint, or suggestions clearly. If you have enjoyed the event, have realized how hard so many worked unpaid, saw how many people cared for your success, and have given their best . It is greatly appreciated. As years go by our level of participation will change, just like we all do in life.