Is it reliable to recruit waiters when the restaurant is still being renovated?

A slightly formal hotel will recruit waiters at the same time when it is renovated. Many of them started to recruit waiters before the renovation. Mainly use the decoration period to conduct pre-job training for waiters. Moreover, after the transformation, a large number of people are needed to complete the land reclamation work, and after the transformation, they have to try their business and do not understand the service. How to do it well if the kitchen can't cooperate? It's too late if you don't recruit people in advance!