Hi guys. I'm headed to Hong Kong for a conference next month, but since I'm leaving the week before I was planning to go somewhere in China in the few days (3-4 days) I have prior to the conference. Based on distance and cost, I decided to try out Hainan, but I would like to ask a few questions:

1. Is it worth it?
2. What should I see aside from the beach in Sanya?

Also, I was checking out quotations on Ctrip, and while the ticket price is attractive (1100 RMB so far to Haikou from SZX, and I hope it will go lower), for some reason it's forcing me to input a Chinese phone number as an SMS itinerary will be sent to me. Unfortunately, as my number expired a long time ago and I lost the SIM card, is there a way I can go around this?

Thanks and hope to hear from some of you soon.