I've stayed at the Wynn/Encore at least once for the past three years and I've come to the Cafe only thru necessity because it's pretty pricey for average food. In the mornings, it's ridiculously busy! Like lines out the door busy, even for the express line.
Don't come here for lunch or dinner, there's plenty of other options in Vegas and their options here are literally only if you're in a huge rush. The Wynn has a new restaurant called Charlie's that you can take out with better food.
For breakfast, this place is okay. I've never had the coffee but I've had the breakfast croissant (bacon, egg, and cheese) a couple times and it's pretty good! Flakey croissant with smokey bacon and it's decently sized, I could just have one and I'm good for breakfast.
They also apparently have boba here now? Something to try in the future!