Well...I did the $20 tip at Monte-Carlo just last week. I would say it worked to my satisfaction. I asked if there were any upgrades available. She said she could give us a monaco suite for an extra $35 per night (3 nights). That suite normally was more in the additional $60 - $90+ per night price range for our nights we were staying. I decided that we would just take our regular standard room that we booked, but asked if we could have a room on an upper floor with a view of the strip. She said sure and gave us a great room with both a view of the pool area and north view of the strip. We could see the Bellagio fountains. Very nice. She also gave us a BUNCH of two for one coupons for breakfast and lunch at the buffet, free spa admission (normally $15 per day), drink coupons for the Brewery, 2 for 1 raft rentals for the pool area, ice cream coupons, etc. We were pleased with the extras she gave us, so I think it was worth the $20 tip. We had a great trip and look forward to going again in the future. I would stay at the Monte-Carlo again. No complaints here.

When I checked in at the Flamingo in July, I said I would really appreciate a very nice room because I had brought my daughter there for her 21st birthday (which was true) and I wanted her to have a great experience so she'd enjoy LV as much as I did. The desk clerk gave me a beautiful room facing the Bellagio fountains, and when it turned out the occupants of that room were going to be leaving the room late, she upgraded us to a suite on the top floor.