Therefore, the waiting circle in the backyard for the vehicle to carry in and out are also very important. 

It is personnel expenses to cost money most in Japan today. 
This is the same in case of the exhibition. 

If work ends early even in case of the hour, expenditure corresponding to it can be saved. 

It is a causa sine qua non to be able to do a smooth carrying in and out.

The standby space need not be beautifully paved. 
However, because the truck with weight comes and goes, it is necessary to level the ground firmly so that ground should not sink. （And regular land readjustment is not avoided.）
It is necessary to prevent to stir up the dust when it is windy. 

Consequently, gravel etc. will be spread over that plaza.

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