Experience P’typing

Restaurant Dining Experience

for experience of both customer and waiter, the we can use a ring to keep both of customer and waiter to notified when waiting for food.
This may be annoying for others even the customer themselves, but it is useful for waiter who don't need to come to ask the customer by walking around, that can save a lot of time. 

For the customer experience, I prefer the light notice than the noise notice. because it has no sound and can also make the point in simmer way. Customer around would feel relax than a sudden sound came out.