Shake shack seems to be the popular east coast burger chain like in n out on the west coast. A must try if you happen to be in Vegas!
Line tends to walk out the door but it goes by quickly. If it's your first time I highly recommend the Shack Stack. It's a combo of their cheeseburger + shroom burger. The portobello mushroom is fried crisply and filled with melted cheese. The buns are unique bc they're soft and eggy.
Frozen custard was practically melted like the one I had in New York :-( The weekly flavor was strawberry almond.
Taste is comparable to the chain in New York but everything was slightly more salty and the fries a bit oily. I would be back for the burgers!