It isn't even the time waiting to be served that annoys me. It's the rest. It will take me 10 minutes to get someone to finally come over so I can tell them I want my bill. It will take ten minutes for the bill to come, it will take ten minutes for them to come back for it with the money in, then ten minutes to bring the change. The result is, I wanted to leave 40 minutes ago and I'm still sat there.