Made a special trip inside to see the conservatory.  I really enjoyed it.  On the way back out, I plopped myself down at a $1 slot machine and put $40 in.  I played for about 25 minutes before I lost it all.   Never once saw a cocktail waitress anywhere nearby.  Slots are tight, and cocktail service is becoming almost non-existent in the slot areas at many of the casinos I visited.  They should do better if they want to bring guests back.  I heard on the news today that visitors to Vegas were down by 11.5% during the month of May.