When I was recently in Vegas, I had the chance to visit a brand new tea store in the Palazzo Grand Canal Shoppes, Moderna-Tea. I was eager to visit as I had seen the sign announcing its arrival over a year ago. The shop wasn't quite what I had expected. I was hoping for a tea shop that sold dry leaf tea as well as offering a brewed tea experience (like a tea bar).
Moderna-Tea does sell loose leaf teas, but no drinking experience (beyond a small sample). Much of its emphasis is on skincare products that include tea as an ingredient.
The store is beautiful, as you can see above. I really loved those light fixtures along with the modern graphics.
I also very much enjoyed chatting with the tea manager (below). We had a long conversation about pu-erh and the proper way to bust up a very densely packed brick like shown. (My answer: These were so tightly packed, they may be meant for display only. In a normal brick, you can try to get a knife horizontally inserted around the top edge to see if any layers peel off. You may need to work your way around a bit.)
I came home with a box of tea, a gunpowder/mint combo (like Moroccan mint) that I enjoyed very much when my allergies were at full tilt. I drank it with a touch of honey. Note: I did experience a bit of sticker shock for the price of the teas that I considered average quality.
I did not enjoy my experience with the skincare line. I was asked to sit in a chair for a sample. Curiosity caught me, but I should have known better! I thought, "Oh, this is a fancy boutique store. It won't be the high pressure sales like on the street." Unfortunately, I was wrong. I experienced the sample > selling trap to be quite aggressive. However, this is Vegas.
Summary: I would go back on my next Vegas trip, and I would be prepared to avoid the skincare sample chair but enjoy the ambiance and the tea chats.