According to an article in the VI Daily News, the times for the St. Thomas-St. Croix ferry will be changed to make it easier to go over to St. Croix for the day. On Friday and Saturday, you will leave St. Thomas at 7:30 am and return at 6:15 pm. I don't know if the fare has changed, but the original fare was $90 round trip. The terminal is right next to the Sea Plane terminal in Charlotte Amalie, right outside of Frenchtown.
The new schedule starts Oct. 1.
Friday and Saturday
St. Thomas to St. Croix: 7:30 a.m. and 4:15 p.m.
St. Croix to St. Thomas: 9:45 a.m. and 6:15 p.m.
St. Thomas to St. Croix: 3:45 p.m.
St. Croix to St. Thomas: 5:45 p.m.
Monday St. Thomas to St. Croix: 8 a.m.
St. Croix to St. Thomas: 4:30 p.m.