I hosted a party of 20 people here and made it clear to the servers when we arrived that I was hosting the party and to bring me the bill. The food was OK, the "performers" not as skilled as I have seen elsewhere. But it was fun.
At the end, the bill was brought, a brother and I went through it and concluded it was correct and I paid by credit card and included a substantial tip. Then we sat for another 20 minutes or so talking. The place had empty tables so I knew we were not keeping people from eating. The workers were clustered at the kitchen door and kept peeking out towards me but did not come out. When I left, about 6 of my guests were still there talking.
I only found out later what happened next. As soon as I was gone the servers came out and told my remaining guests that they, the servers, had failed to bill for all of the meals and (about) $25 was still owed. Someone had to pay before they could leave. My 23 year old nephew paid.
I am appalled that my guest was asked to pay because of the mistake of the servers. They should not make such mistakes but had ample time to correct it before I left. Plus, I am convinced that there was no mistake.