I'm from the Bay area and having a Tapex here in Vegas is one of the best things to ever happen! (not really, but you get the point)
My cousin and I came here to check it out with already high standards of how things should be. It is located right next to Jason's Deli, Wingstop, and Seafood City (Asian central, basically). Service was on par. It was quick and the girl who took our orders was very friendly and helpful. We ended up ordering the Halo Halo and Avocado snow bubble. I'm not sure why people weren't able to taste the avocado in theirs. We tasted ours and saw the lady use real avocados to make them! We also decided to order the Matcha fried Oreos. It was served with 4 Oreos and a scoop of vanilla ice cream in the middle. They were good, but nothing special, especially since I didn't taste the matcha that much. However, it didn't meet our standards and while the food and drinks were good, it wasn't anything spectacular.
Seating is plenty and it's very spacious and clean here. I'm glad it isn't as cramped and dirty as some other boba places, like Tea Station or Volcano Tea in Chinatown.
Overall, I'm a fan and I would return. This is one of the better boba places here in Vegas, and I'm so happy to finally have a Tapex in town!