Hi, As far as i know, the visa-free admission policy is not related to the tours but related to which country you are from.

Please refer to this page for the law quote:

http://english.peopledaily.com.cn/english/200101/05/eng20010105_59675.html

...."members of a tour group organized by international travel services in Hainan, whose registrations have been approved by the National Tourism Administration"....

Does that include all tours?

Hi, what kind of tour you would like to take? I read the article, it seems that you need find a local agency first to make the application, you can try to contact them to get more details..