How to reply to customers when waiting times for tables at restaurants is very long?

That's subjective. You probably spent more time complaining than you did waiting for the changing room. How you spend your time is up to you.

If it made you feel better to complain, so be it. As far as whether the complaint did any good or not, that's out of your control so don't worry about it. Perhaps that employee is a really good one and you just caught her at a random moment where she wasn't focused.

Perhaps that employee is awful and your complaint was final impetus for them to fire her. What happens AFTER you complained is really none of your business.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.