Yes, it is hyped up because of David Chang. No it is not the same as the Milk bar on the east coast in regards to sitting in and dining. It is as stated, a "bar" that serves quick desserts. Much like an expensive Starbucks, created by a 2 Star Michelin Chef... It is a very good option for dessert.
Being local I've been back a few times during the day - no long lines and one Saturday night during CES and was 12 deep. Not a factor cause the staff was prepared and had the line moving pretty well. Each time that I have went, the staff was really helpful and if there was a lag in service, they apologized cause some of them were still learning how to make certain things.
The Crack Pie - on point, just like the one I tried at the east coast Milk Bar.
The crack pie in shake form - yeah 10 bucks but it is Vegas. Competition will cause the prices to lower a little and stabilize. (maybe) Really sweet and rich - so bring your sweet tooth or have something pretty savory beforehand.
Cookies - had them all but my fav is the compost and Corn flake with choc. and marshmallow. The one I liked the least was the chocolate chocolate chip. That was a little too sweet for me but I'm sure there are people out there who like them.
Birthday cake Truffle - Was ok to me but my cousin loves them.
They don't have the steam buns... Yet, but I am hoping that will happen.
Sad to see some of the reviews be really picky with a place that just opened up. Give it a second chance and see how they have evolved to work out their kinks. I know that some are looking for that "experience" - I get it. Then dine in at Momofuku for that.
I'm glad that Momofuku and Milk Bar are here and I look forward to returning.