These problems would probably have arisen because of the 30 min rule J*. Just put yourself in the pax's shoes for a minute.
You have paid for your family's airfares with J* + accomodation at the carvan park + your V8 hire car then all of a sudden someone dressed in orange tells you that the flight has closed and now because there is 29 minutes to go they couldnt possibly get you on the flight because all the paperwork has been done and all the guests are on board.
Then you get told the only possible flight to get you to your holiday spot doesnt leave till tommorrow morning and will cost 10 times the price you paid for the original ticket.
These "counter-rage" incidents need to be put into perspective with the whole story being told, people dont just walk up to the counter and start throwing staplers.