You'd think, since I live on the West Coast, that I'd know this, but I don't, so here goes....

Which hotels offer check-in at McCarran Airport? Does the airport website list them?

Does one show up at a central counter in the terminal, or are there counters at Baggage Claim?

How are procedures streamlined at the hotel itself?

If nothing else, having this info on the Forum would help us all out, so guidance is, as always, greatly appreciated!!

I know Paris and Bally's (and I assume other Park Place hotels...Caesar's, Flamingo, etc) have check-in at McCarran. I checked in there once for Paris. It's in the baggage claim area, located on the side opposite the central entrance point where you come in from the escalators.
This allows you to get a room key at the airport and bypass check-in at the hotel.

Awesome! Thanks for the 411, gplimpton. Anyone out there know of other properties with this service...?

MGM does too. If you have particular hotels in mind, check out their web sites; info is usually there.

beachbum: Thanks as well. But *sigh* now I have to actually do RESEARCH?! Actual WORK? Eeewwww...!

(Just kidding!!)

From the McCarran Airport website:

Hotel Check-in:
Gives travelers the opportunity to check into participating hotels while at the airport. Limited concierge services also available.
MGM Grand

MGM Grand
New York New York
Location: Terminal 1, Level 1, south Baggage Claim
Hours: 9 a.m. - 11 p.m. daily
Park Place Entertainment
Bally's
Caesars Palace
Flamingo Hilton
Las Vegas Hilton
Paris

Location: Terminal 1, Level 1, south Baggage Claim
Hours: 9 a.m. - 1 a.m. daily

That's the ticket! Thanks, Bo.