I am going to try to be as fair as possible. I have eaten lunch here quite a few times and while the food is very good the service leaves something to be desired. The waitress who I understand is the owner's daughter is at best frazzled and overwhelmed and at worst rude and incompetent.
Unfortunately there are not a lot of choices in Las Vegas if you are looking for a high tea. The Four Seasons is exceptional but expensive. The Bellagio offers it in their Petrossian Bar if you don't mind an unhealthy helping of second hand smoke with your tea.
Chef Caroline is great and friendly and her presence after the meal has saved a couple of my dining experiences, although one can only overlook poor service for so long as it is a significant part of any restaurant experience.