Most of the 10 or so regulars probably wouldn't go for a walk on their own, says member Pat Weir.
"It's more motivating to walk with a group."
Mate Vuletich and Ken Gavin agree the walks are good for the company and the exercise.
"It probably helps the body cope with the disease but it certainly helps the mind," Mr Vuletich said.
Then, adds Mr Hulse, there's the visit after each walk to the nearest cafe. "That's a drawcard, too, even if we undo all the good work our walk has done."
They all seem very cheery considering Parkinson's can be debilitating, and, even in milder forms, is life-changing.
"Nothing you can do about it, you just get on with living ... it could be worse," says Mr Hulse.
The apres-walk coffee stops give the group a chance to share information about particular problems, or just have a good natter and laugh, Margaret Page said.
"The act of laughing not only lifts the spirit but also exercises the facial muscles."
A new weekly Singing Group, still finding its voice, will help there, too. The ability to hit the right note or keep a tune is not strictly necessary. As well as a fun facial muscle and lung work-out, the singing counterbalances the softening of the voice and flattening of the tone that can come with Parkinson's.
One in every 500 New Zealanders has the progressive neurological condition. Every muscle in the body can be affected. The main motor symptoms are tremors (shaking), stiffness and rigidity and slowness of movement.