Thanks for playing! I'm glad you enjoyed it :D There is a timer running, it's just hidden ;)
Oh, so sorry to hear about the tutorial bugging out! Do you happen to remember what you did? I just played through it and it worked fine on my end. And yeah, there's an issue where if you click on the cash register while one of the customers is leaving, it bugs out the next one.
I definitely like the idea of adding the empty cup to the HUD when you pick it up. Oh wow, did no one ask for pancakes? There's a small QTE that pop ups if you click on it (assuming you have the necessary dough).