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

A slightly formal hotel will recruit waiters at the same time during the renovation. Many of them start to recruit waiters before the renovation, which is mainly to take advantage of the renovation period to train waiters before their posts. Moreover, after the renovation, a large number of people will be needed to complete the land reclamation work, and after the renovation, they will have to try out their business and don't understand the service. How to do a good job if the kitchen can't cooperate? It's too late not to recruit people in advance!