For details of CanAmJu classes, take a peek here. One of CanAmJu's then members, Graeme Spinks, represented New Zealand at the Olympic Games. Friendly inter-club evenings are held fairly often. National competitions when held in Christchurch are usually held in the Pioneer Stadium owned by the City Council. This is a large stadium with space for two full mats with a large safety surround, plenty of space for a lot of spectator seating, and abundant competitor facilities for warm-up, changing, and catering.
Clubs provide the judges, referees, timekeepers, tatami and catering.
Health and Nutrition. Not only is it important to exercise regularly as a prerequisite to doing judo, but good health and nutrition are important. I recommend the books and ideas of Dr Michael Colgan who is an ex-patriot New Zealander with his own Health Institute especially for athletes, in the San Diego region of California. He is also very well informed in the nutrition of older people. Visit his Institute just here.