You have probably heard by now of the propeller problem when the ship hit a rock. A travel agent should give you an update. The class of ship is also suseptable to engine bearing problems, we have been on the Mill. without a hitch, been on the Summit with a problem that caused some ports to be missed out & just been on the Infinity, without a problem at all. The ship itself is magnificent. The oldst of the Millennium class. The attention to detail is fantastic. Iced facecloths passed to you - by tongs! - as you board back from a day trip (as long as its a hot country!) waiters taking hold of your tray & finding you a table in the buffet bar. A very varied entertainment in the theatres, not just 'Broadway shows', but things like a concert pianist, a violinist, this sort of thing, more upmarket than other ships. This is a highly rated ship by US travel magazines, 90,000 odd tonnes & is a great way to cruise. We would have no hesitation on going back on her.
My daughter and son in law was supposed to be on the Millenium for 2 weeks in July but because of propellor trouble this was cancelled, all the information they received was through a web site cruise critic hpe this is of hel.