When you are at a party, and a group of entertainers are told to mount the stage to perform, but they do so without excellence, which is deemed not professional; enjoy it. Do not for any reason make faces at their poor performances or boo them. They are there to entertain after sleepless nights of careful practice; even if you dislike the performance or the performance was full of flaw, just pretend to like it anyways; in a moment the party will be over and you will be out of there.
It is bad manners to boo at people who must have practiced hard and performed poorly. Correct?