"They're just so excited."
Tourette syndrome is a neurological disorder characterised by repetitive, stereotyped, involuntary movements and vocalisations called tics.
Ms Twemlow said she started the association and camp following a struggle to find support groups and contacts after her daughter was diagnosed. "For a lot of them it's the first time or the only time they meet others with Tourette's.
"They are quite overwhelmed initially, and the parents get overwhelmed as well as all these emotions come out."
The children, adults, parents and supporters received a powhiri at the Rotorua Lakes Council yesterday.
"It's just lovely that people want to welcome us."
She said the youngest child was 6, with the bulk of the children between 10 and 14.
Five of the children are being followed throughout camp for a one-hour documentary to be aired by TVNZ. The documentary will be out in the New Year.
Napier's Lily Poutama, 12, said she was looking forward to all the activities and making new friends.
She said the camp was great because you met other people who had Tourette's, you could be comfortable and didn't have to hide it.
Lily said a challenge of Tourette's was trying to get people to understand what it was.
"Sometimes people will stare at you and make fun of you but don't understand what it is."
Cadence Hita, 10, from Ashhurst and Jacob Brown, 9, from Palmerston North also said they were looking forward to making new friends at the camp.