What are they? Well, the two most annoying things that I run into are trying to save a machine so you can come back at your convenience and sitting at a machine, but not actually playing it. These two actions are so annoying to me personally and honestly, kind of rude if you ask me. With that said, please stop doing these two things. Most people that visit the casino have particular games in mind that they want to play and it can really be annoying if you can't at least spend a few minutes on your favorite slot machine. However, there are a few things that other people do that can annoy the hell out of you when you're trying to find the right machine throughout the night.