day trip from Guilin to Longji terraces

Hi, we are travelling in a group and have one day free in Guilin on 27th of april. How can we go to the rice-terraces of Longji (and see the ladies with the long hair too?)? How can we get there and back on the same day (easy, not too expensive)? And... we don't speak a word of Chinese... Is there water in the terraces at that time?
Thanks a lot!