I was able to play your demo at Level Up KL 2023! But didn't went far into demo. However, I had the chance to replay it again to the fullest at home. Unfortunately I wasn't able to record the gameplay to give you a full immersive of my comment, but I hope it helps.
First of all, I love the tapir so much, it's so cute and chonky. I'm also a big fan of MUOC who supports Malayan Tapir Conservation Centre.
I like how during the serving, there's a clear indication whether I've cooked the food/drink or not. I love that! I almost made double of the food. I would hope that there's an indication of such during the tutorial, I think that's what missing. You have the tutorial of clicking the pot to start cooking, but you don't have the indicator to click on the customer's speech bubble when it's highlighted = available food on the display. It took me a while to realise non-highlight speech bubble means I don't have the food prepared.
There's a little layering glitch where the customer left the seat and the seat graphic is above the customer's graphic.
I know this is just a demo and you may have this in mind already. It would be great to have a customer's patient indication or how long they would wait for the food before leaving.
I have an idea that you may already have in mind, when the customer tapau back, maybe it's the red plastic bag or maybe if they just tapau beverage it's ikat tepi! Ooh I love that small details if you do plan on adding that.
Overall, call me bias but I love the art and mechanics. Excited to see how the level progress and the ending.