The difference lies in the form of getting drinks and meals.

Ordering food is a traditional box KTV. In the catering consumption mode, the required drinks and snacks are ordered from the waiter through the menu or through the computer terminal, and the waiter sends them to the box for customers to eat.

Because of the relationship between labor cost and saving catering materials, self-service KTV was developed later. Kitchen and bar make meals and drinks with fixed dishes every day and put them in the self-help area. Customers can choose and save food delivery manpower and catering materials at will, but customers feel that it is over-valued, and its commercial inspiration comes from buffet.

In the face of fierce competition, in order to further reduce the configuration and cost of kitchens and bars, some KTV introduced the concept of supermarket, which is called mass selling KTV. Such a KTV will set up a sales area similar to a supermarket in the business area, providing bottled drinks and bagged snacks at low prices, further attracting customers with low spending power. It is estimated that only a few or even no one wants to order hot food at such a KTV.

Hybrid KTV, in order to meet different customer needs, not only set up a small supermarket, but also set up a buffet area, and even provide catering, providing services according to customers' choices or different time periods.

Generally speaking, the turnover of internal supermarkets accounts for a relatively large amount of food and beverage consumption, which is called discount KTV.

Similarly, the industry with a large amount of buffet consumption is called self-help.

It has little to do with whether the song ordering system orders songs by itself.