There are many convenience stores in the area and in my opinion, this Circle K is one of the cleanest. There are a variety of characters hanging around both inside and out, but I think it is due to the location. Any store you go into in the area will have this issue.
The cashiers are super friendly and always greet me as soon as I enter the store. There have been times the hot chocolate machine has run out of powder and upon asking, any employee will take the time to fix the issue quickly. They also have a 50% off bin near their new espresso machine. The items change daily and can range from a seasonal candy bar to a discontinued alcoholic beverage. Bonus!!!
The reason Circle K stands out among its competitors is the styrofoam cup. On a hot Vegas day, this cups keeps your ice from melting quickly and your beverage cold longer. You can't beat the 44oz fountain drink for 89 cents! I know, I know... you are concerned about the affects the styrofoam has on the environment... if that is the case, you can purchase their refillable mug to use as many times a you want.
For convenience and available items this place is okie dokie in my Yelp book!
Enjoy the smiling faces of the employees and the patrons!