As the name suggests, the atmosphere in this dispensary is very chill and low-pressure. After a glance at the limited--but high quality--offerings, JOIN THE LINE to request and pay.
"Budtenders" will weigh and package your product in front of you exercising the highest forms of professionalism and courtesy, answering any and all questions....and even if they don't partake, they're still informed enough to help you choose the correct medicine to treat your issue.
Paying is a bit of a process, as you're forced to put whatever currency you have onto a membership card and then pay! (You're charged $2.00 for the card, which seemed like an unnecessary tax to me! Maybe incentivize the card if you're going to slap a fee onto my bill!)
Join the text list for pretty good deals; they don't overload you with texts....maybe one a week?
That said, I like Zen a lot better than other dispensaries I've visited in Vegas.