Can I ask, for children under 1 meter 2 tall, can they tag along free of charge with adults who have just finished self-service meals?

Less than one meter two can eat for free.

Under 1.2 meters, eat for free; over that height, half price
You can get it for free, but actually there are many dining options around here that you can choose from. If you need air conditioning, this self-service meal option might be a good choice.
Heavenly Forest Park is available.
Less than one meter two can be eaten for free.

Less than 1.2 meters can eat for free, half price after that.
It’s free, but actually there are many restaurants around that you can choose from. If you need air conditioning, this buffet can be an option
Heavenly Forest Park is feasible.