At yesterday's party the sports fan met some of his heroes, including Warriors Micheal Luck and Shaun Johnson - "He's the man".
But Joel has one more long-term wish.
"I want to be playing again and to walk again - hopefully to play for the All Blacks," he said.
Mayor Len Brown got the crowd singing Away in a Manger, and special guests Wendy Petrie and Clifford the Big Red Dog also attended.
But the biggest stars of the show were Santa Claus and Mrs Claus, who joined the party at 3pm to meet the children and hand out goodies.
The party was a great chance to meet other children and their families, said Susan and Greg Orr, who brought daughter Samantha.
The 17-month-old has hypotonia, which causes a weakness of the muscles in her legs and other developmental problems.
"I was telling her she was going to see Santa. I think it's really great - it's great to get out and for the children to get together," said Mrs Orr.
South Auckland Health Foundation's Pam Tregonning said the "fantastic" event gave children a special Christmas.
"This party is exactly what these kids and their families need - loads of fun, lots of treats and a little bit of Christmas magic," she said.