Music and sound design are spectacular. They set up the vibe perfectly! With the UI design and the simple buildings and people, the style feels candid! It could be developed further with shaders and some light texture (enough so it's not flat, not so much to lose the simple style).
I immediately felt the lack of in-game instructions. It took me a bit to figure out what was happening in-game and what was the goal, but once I did, I fell in love with the idea. Would love to see it developed with some sort of small story! It was immediately clear it was a building/tycoon game, though.
I jumped in blind, and the lack of instructions also made me not figure out you could move the camera or rotate objects ^^'
I didn't feel like the cards/events did anything. Also didn't see any friction to keep the money up; I could just keep placing stuff and watch as people came and smiled. That's not to mean this wasn't fun, though. It was really pacifying.
Last thing I felt lacking was no grid system to snap and attach objects to maximize space. However, it could also be taken in the opposite direction and let any orientation of objects, allowing full customization of your convention.