My friends and I decided to give MGM a try even though we're regulars at Encore and the Venetian for our trip this time around. We stayed from June 8th-11th. It was the same weekend as EDC and the Pacquiao fight so we knew it was gonna to be a busy weekend. However, what my friends and I didnt expect was all the issues we had in getting our room and keeping our room. Their systems were down so there was a long wait, but when we were finally assigned a room we were upgraded, which was nice until my friends went up and found out there was already a guy in there. So fine, mistakes happen, we were then downgraded back to the originally booked room, but our keys didn't work. Then after FINALLY getting into the room, a random stranger tried getting into our room telling us MGM assigned him to ours. Good thing we were inside the room, what would've happened if we were gone and strangers had taken our stuff? We left, had a bite to eat, and came back to find our keys not working AGAIN. Finally, after dropping by the concierge desk the fourth time, we had no more incidents our first day there.... Until the next day. A manager knocked on our door and let himself in without our consent and with the privacy tag attached in front of the door and he said our room didn't have a name or booking attached to it... Are you kidding me? There's a privacy sign outside our door first of all and we went down to the concierge multiple times after multiple screwups and you're telling me our room didn't even show up as assigned to us? This was our first and LAST time we are ever staying at MGM.