Harrah's Entertainment, the biggest casino company in the world, is changing its name to Caesars Entertainment in order to capitalize on the powerful value of the Caesars Palace brand. The Harrah's brand isn't going away; it, along with the Horseshoe brand, will be maintained under the Caesars' umbrella. Hence, the move is not expected to lead to name changes at the casinos themselves.

PRIME DEAL: The Hard Rock is serving an excellent all-you-can-eat prime-rib dinner for just $9.99, from 4 p.m. to 4 a.m. every day in Mr. Lucky's restaurant. The meal begins with a 13-ounce slice of prime cooked to order, plus a choice of soup or salad, baked potato and veggies. If you're still hungry, you can order as many additional slices, served in 6-ounce portions, as you can finish. If you don't want the prime, the same restaurant serves a super steak and shrimp for $7.77. Neither meal is listed on the menu, so you have to ask.

MASTERS: Bellagio now has four master sommeliers, more than any other property in the world. The newest inductee at Sensi joins the master sommeliers at Picasso and Michael Mina, as well as Bellagio's director of wine.

FREEGENHEIM: The Guggenheim-Hermitage museum at the Venetian is closing on May 11. The good news for art lovers is that while it's open, the museum is waiving the usual $15 admission charge and will be free to all. Enjoy it while you can.

NEW CLUB: The next Las Vegas mega-club will be XS at Encore, the new Wynn casino scheduled to open in December. The 40,000-square-foot nightclub apparently will be built around a pool. Cool.

Q. Are Donny and Marie Osmond the next big celebrities to take residence in Vegas?

A. The Osmond siblings are the current odds-on favorite to replace Toni Braxton at the Flamingo later this year. Braxton is scheduled to play the Flamingo until August, but health issues may affect that timetable.

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