Guilin to Yangshuo (Li River)

Hello,

I've got one question. I want to do the Li River cruise, but I will arrive late at the 4th of July in Guilin. The 5th of July I want to do the Li River big tour. On the website you said that you have to purchase the cruise a day before you want to do the trip.

How do I purchase it right now, or a week in front? Is there some kind of website where I can buy these?

I look forward to hearing from you,

Kevin van Haren