Mandalay's been my favorite for 10 yrs. till i discovered the penthouse @ Mirage. Aria & Cosmo don't suck either. Mandalay has THE BEST POOLS - of course we'll be there in December....
we stayed @ Mandalay in 2011 for Mosconi @ MGM. the rodeo @ MGM had 50% of their cowboys staying @ Mandalay. there were hats everywhere! (it was hot....

) i took KK9 to Red Square, and i can't remember if that shot of vodka was $38? or $58? (it was obviously effective) the red vodka penne chicken pasta was great too in the dark aura.
i've stayed at Luxor maybe 5 or 6 times. the Towers are newer, but you don't have the effect of the vaulted ceilings & see the sun glistening off of Mandalay's gold windows every morning & walk out of your room into the open casino floor filled w/ Egyptian sculptures. but for $33/night - i'd be booking Luxor over Tropicana & hopping the free tram to Mandalay, Excalibur, NYNY, etc.
tell Gail to bring a cowboy hat & boots!