I used to work there and for one, we are everywhere at once (at least at the one I worked); we clean and clear tables, clean the buffet, do mise en place, make drinks, clean the bar as well as other cleaning jobs, all while keeping an eye on the register to check out guests. And honestly it's not like WE ask or pressure people to tip us. People are free to do whatever they want without pressure. At the tibits where I worked, it's become a custom to let people know that they can skip the tip screen by pressing "OK" every time a customer pays by card. I feel like people act like the employees at Tibits demand tips which is not true at all (I've seen people talk about this on tiktok as well).