A Week In Haikou for 2 Seniors -Free and Easy Stay

We are two seniors in our eighties,healthy,and quite fit who will be staying at the Noble Yacht Club,Haikou.This is our first trip to Hainan and we have 7 nights there.We are not conversant in the Chinese language,only English.Can you please tell us how to maximise our stay with regards to sightseeing, local foods.and the things we should not miss doing?Kindly send me the websites for China Bullet trains from Haikou to Sanya and the website and address of your agency closest to Hainan.Our trip will be in June 2012.