Some young cancer patients and their families have been offered free tickets for Elton's Auckland engagement.
This is to take place at the Vector Arena on May 14.
Concert promoters offered the Child Cancer Foundation 100 tickets for young patients and their families.
Foundation spokesman, Russell Crackett said parents needed time out.
"It basically gives them the chance to lock out the outside world for a couple of hours and just switch off from the crap they have got to deal with and put themselves in a special sort place, forget the world and have a bit of fun."
He added that it was not known whether Sir Elton would be told of the cancer patients, or if he would acknowledge their presence.
