One of the big no-nos is using your phone, as you are asked right before the movie starts to turn it off.
So if someone is on their phone, you are well within your rights to ask them to stop using it.
But what about talking?
It is sort of an unspoken rule not to talk, as you paid your hard-earned money to come and watch a movie, not to hear someone talk to their friend about their week.
But because of it being an unspoken rule, it might look like you are the one that is rude by asking for silence, even if they are ruining your movie experience.
However, if the prevalence of bad cinema etiquette is something that’s put you off going, Kingsman: The Golden Circle might be the perfect antidote.
From literally the first scene it takes it to 11, and does not really let up over the course of the film.
Combine that with its humour and its recognisable characters that will drown out much of the noise.
Golden Circle is a follow up from the incredibly successful Kingsman: Secret Service, and while it isn’t necessary to have seen the first film, it will probably add to your enjoyment as you recognise returning characters and see a deeper look into the secret spy world that was established.
Returning is Eggsy (Taron Egerton), the former street tough is now a bona fide top secret agent.
He and Merlin (Mark Strong) are the last Kingsman agents standing, as every other agent around Britain was systematically wiped out by drug kingpin Poppy (Julianne Moore).
If you’ve seen the first one, you know what to expect; lots of great action set-pieces, Bond-esque dialogue and foul language.
But because it is the sequel, and because a large part of the movie takes place in America, it must be bigger, though that doesn’t make it better.
Following the success of the 2014 film, it seems as though they packed every Oscar winner or famous person into this movie.
And while it’s fun to see Channing Tatum play a cowboy version of the Kingsman called Tequila, the sheer number of stars added means that there isn’t enough quality screen time to go around.
Not that you really want to spend any time away from Eggsy, who continues to show what star quality he has.
In a world where the majority of the spy blockbusters are played by middle aged men (Cruise, Damon and Craig), it is refreshing to see a young, charismatic lead who can perform acrobatic stunts with a smile on his face.
Although he looks the part of the upper class spy, the Golden Circle still does its best to remind you that he is still quite new to this line of work.
It is from this perspective that much of the humour comes, as well as the interesting characters who are allowed to shine.
Moore is a standout as the villain, the smiling, kind woman who hides the fact she has no problem with committing mass genocide.
Her hideout is unique as far as Bond-style villains go, and there she has captured a very famous musician, who has one of the best all time out of control performances you’ll see from a celebrity playing themselves.
Agent Whiskey (Pedro Pascal) is another strong addition as a Chilean actor playing a Kentucky American. He does a fantastic job of adding to how ridiculous the world is.
While it is a fun romp, this is most certainly not a movie for the youngsters, and the risqué type of humour or ruthless action might also put off others.
This is a movie that will appeal to people who loved the first ones, or long-time Bond fans, or people looking for a slick action movie combining humour and ridiculousness with fun characters.
And best of all, it teaches a very important message: “Manners maketh man.”