When I go to a restaurant and they have a sign saying "please be patient as we have a worker shortage" I walk out. Don't blame your lack of decent pay or loyalty to your employees for poor service. When the shutdowns happened, the good employers kept their staff and sacrificed and retained those workers (loyalty) and now they can operate normally. Those employers who dumped employees like a rented mule are now dealing with not being able to hire back. You reap what you sow. Loyalty goes both ways.
It depends. The restaurant I go to once a month has this exact sign and at times there is just one or two servers for the whole place. Nobody wants a job.
These employees have been very loyal to the owner during all this and our group recognizes that. We tip them very generously for their efforts.