I think the concept is a great idea but I feel there needs to be an overhaul of the serving process. You have to go through so many menus in each shift, which might not be a problem if they were instantly responsive but as it stands, turns in to a very boring process quite quickly.
-Does there need to be a text box saying you approached a table?
-Does it need so many fade transitions?
-Maybe instead of having to choose the table number to start, have menus for "Take order", etc and then choose the table number from a list.
The text speed and auto text speed is also incredibly slow, I think being able to change this would make it a lot funner to read.
Additionally no save menu is a big negative in my eyes, it would be great if this could be implemented.