I was super excited to finally be able to try Milk Bar when I was in Vegas. I got the cereal milk soft serve with cornflake crunch and the fruity cereal milk soft serve. My first thought when I got a taste was that it was way too sweet. I actually struggled to finish it and I have a major sweet tooth.
The cereal milk tasted just like milk and the fruit cereal milk reminded me of Fruity Pebbles. Even though it costs extra, I recommend getting the cornflake crunch. The saltiness of the cornflake crunch is a good contrast against the sweet soft serve.
Even though the soft serve looks small in pictures, you can easily share one with another person and it'll be enough. This is a pricey place for soft serve and my expectations fell short.