It's true
http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10866404
http://www.stuff.co.nz/nelson-mail/news/8322862/Reined-in-for-being-drunk-on-a-horse
Was the women in the right?
The herald article claims she was charged with being drunk in a public place. How can that be?