I called last night to see if I could use the code for our L Suite at The Hotel, the first girl I talked to said the L Suite usually don't have Promo Codes you can use and she said there was none at that time, so I paid our deposit for the 2 nights in hopes the rate goes down (we want the night before too and at the regular rate it was pretty high for both nights). I then saw this new code online, called back, talked to someone else and kinda made it seem like I was making a new res and was seeing if I could use the code for that specific suite, she put me on hold and it worked! I'm super stoked. I don't know if maybe she shouldn't have used it for that suite, but I'll take it. I'm still going to call here and there to see if the rate goes down in general for those dates, but for now this works!
I know for sure the codes work for the Vista and Media of course, as well as the H Suite at TheHotel.
PROMOMB - PG for Mandalay Bay
PROMOSH - PG for TheHotel at MB