I went to Tiffany @ Bellagio just today. The staff were really friendly. It is a slow day (wednesday). The Tiffany at Crystals at the new City Center is big. Since it just opened and it was after Christmas it was just too busy. It took awhile to get some service. Each employee had a guest and people waiting also. When I finally got some attention she was very attentive and helpful (like a usual Tiffany & Co. employee).