I have been to a number of self-serve yogurt places. In fact, it has become our go-to dessert for our family.
This one was not impressive at all. It is more expensive than many others (although maybe not so much for the Strip). And the selection, particularly for the toppings, was not very good.
You don't have a lot of other options this far down on the Strip, so it is okay from that perspective. However, if you don't mind walking, consider finding another location.