Having just visited London at the end of May, I've been dying for another visit to afternoon tea. The Tea Lounge at Mandarin Oriental sounded like a chill thing to do on a Sunday afternoon, compared to all of the hustle and bustle of the Vegas Strip.
My friends and I made afternoon reservations weeks in advance. We were promptly seated upon arrival and given menus to peruse. We opted to split one tea service and added an extra pot of tea. The service is definitely pricey-- $40. We paid 17.50 GBP while in London, but I guess it speaks to the Mandarin's ambiance and clientele.
Overall, the spread was beautiful and the lounge was peaceful! I enjoyed relaxing with my friends and not hearing the constant beeping of slot machines or yelling over the casino noise. The Black Forest ham sandwich and the Mandarin Orange black tea were my favorites of the service. The scones with jelly and clotted cream were also quite good. It's definitely worth a try if you want a nice, quiet afternoon and some tasty treats!