According to the information I had access to, the 5 sails are semi-rigid and of a patented design. They have a total surface of 12440 m2, distributed by 5 masts. Apparently, when winds are of 30kts or higher, sails will be the only means of propulsion.
The major problem, however, seems to be the overall vessel dimensions:
L = 304 m, W = 60 m, H ~= 100 m
Length is not a problem. But with such gross width and height, the ship may not be able to enter several major ports of tourist interest, and when docked, it may become an obstacle to normal traffic at several other locations. She may ultimately be prevented to sail to many popular destinations...