in the casino you can play the slot machine and if you play while working as a bunny girl your boss shows up and fires you lol.
you can also talk with clients and depending on what they say you must respond correctly to their needs, responding correctly helps you level up your "bunny skills" and unlock new banquet tricks like pole dancing which we cant see in the trial because its locked.
there is more stuff to it like "lucky lewdness" and also a vip room .
To work as a dancer you need to unlock dance moves. you can get one easily by giving food to the npc on the left after entering the dance parlor. the mini game is pretty cool ,first you chose a dance move, in the demo you only have the one i just mentioned ,it also has a rating of only 1 star (3 stars is the max) and then a mini-game ensues where you need to increase the bar that represents the enthusiasm/horniness of the crowd. as the bar increases, the dance starts to change and get spicier, the crowd also start reacting differently. they will also start throwing more money into the dance floor the more their enthusiasm increases. if you max out the crowd's bar ,your character will refuse to take things further unless she has high enough nymphomancity which is not possible in the demo, meaning there is one final variation we didnt see. also keep in mind that each dance move has its own variations and reactions.
this event is really awesome and the variations are really fucking good, the dev really cooked with these.