FYI, in case people are interested there's a thread about Hilton Resorts World here:

Las Vegas Hilton at Resorts World {US-NV}

Conrad Resorts World here:

Conrad Las Vegas at Resorts World {US-NV}

and Crockfords Resorts World here:

Crockfords Las Vegas, LXR Hotels & Resorts {US-NV}