Dear Nathan,
Thanks for contacting Top China Travel!
Do you mean you want to first pay visit to Longji Rice Terrace, and then back to Guilin to take Li River Cruise to Yangshuo in a day?And I will anwer your question one by on:
1. About the distance from Longji to Cruise peer:
Longji is 77 km away from Guilin downtown, and it takes around 2 hours.
Zhujiang Peer where you board the cruise ship is around 30 km from Guilin downtown, and it takes around 50 mins.
2. About the shipping time of Li River Cruise
In general, the shipping time is from 07:00 to 18:30, and about 4 hours for the whole cruise to get to Yangshuo.
Any further request or question, please feel free to contact with us.