Of course gates improve when a club is challenging for promotion. Durr! The point is that gates are going to be significantly higher challenging for promotion from L1 than from L2. It’s hardly rocket science, is it.
As for “running a shop”, if a customer offered constructive criticism then, yes, I’d listen to it, but if a customer just complained for the sake of it I’d very much support my staff and tell the customer not to come back again.
The fact is that some people will never be happy no matter how good the service might be.