Probably nothing. They're willing to take your money on spec. If they have to cancel the flight because the airport isn't open or the government is limiting entry it really doesn't cost them anything. On the other hand, if you find your intended accommodations aren't ready I'm sure they'll be more than happy ding you for a change fee!

Good luck! I hope you are able to have a wonderful trip! <img src="http://www.traveltalkonline.com/forums/images/graemlins/handshake.gif" alt="" />