What you may see if you try to book...

The systems at the affected hotels seem to be working sporadically. But as of 6 pm PT, these are screen shots of what I found when I tried to book. Signature seemed to be working OK, for now. Earlier I had not included Mirage, which is the other property on the OPERA system, but just now I tested their site, too, and as you can see they're in the same boat.

Click on the pic to see the images more clearly. I am awaiting reax from MGM Mirage PR. Kinda interesting how each site has different kinds of errors.

BREAKING: MGM Mirage Reservation System Crashes For Bellagio, Four Others

Right now, if you try to book rooms online at the Bellagio, Beau Rivage, Treasure Island, New York-New York or Signature at MGM Grand properties, you probably cannot. And if you have a reservation, prepare for a very cumbersome check-in process. For at least two days, guests have had to have their rooms checked in by back-of-the-front-desk reservationists who manually place them in their rooms and create their key cards. Guests must leave cell #s at the front desk, at least at Bellagio, and are called and sent to a ballroom to get their keys when they're ready.

The trouble stems from the new OPERA reservation system that the company has been transferring over to for the past couple of years. Apparently the addition of the New York-New York may have overloaded it and caused the system to crash and has limited the number of reservations who can access it.

The inconvenience is costing MGM Mirage big bucks. At Bellagio, for instance, some guests are getting comps worth hundreds for the messiness they've encountered.

Developing...