First time in Finland? | How to behave in a bar

So I noticed that (again) it has been a while since I have posted anything. Sorry about that. Now that it's winter season, almost Christmas, I want to tell about our strict laws. It's good to know, if you are first time in Finland. Also some natives should check it up, since everyone seems to be pretty clueless about things.

And just do we are clear; I work in a pub. Nightclubs are something I don't understand. But I think that people working in any environment which sells alcohol can relate to few of my points.

How strict our law is exactly? Let's say, that selling alcohol and tobacco is actually reverse selling; we try our best not to sell anything and/or preventing a possible sale. According to our laws, anyway.

Rule number 1:
Do not bring your own alcohol. 
If we catch you, you're out for good. We don't want people who can't buy their own drinks.

Rule number 2:
Law prevents us from selling double, you are only supposed to have one glass in front of you.
This one is one of the oldest, stupidest thing. Think of us as kindergarten teachers and you are the under six-year-old kid. You can play, but just with a one toy at a time. Also, if you misbehave, you go to time-out. In real life, we throw you out. Or rarely, call the cops.

Rule number 3:
You can order up to 1 litre (~33.81 oz) below 22% strong liquors or 4 cl (~1.35 oz) over 22% strong liquors.
Yes. That is also under control of our law, not just the bartender being an asshole. So if the bartender is breaking the law for you, he/she is risking their personal permits or even the whole bars permits. So don't make them. Usually the young ones are easy to convince, since they have not grown their work-ethics. But then again, it's always up to the seller. But this law is reversed (!) if a group is involved. So in short, law is strict to a person, but it eases when it comes to a group.

Rule number 4:
We don't tip that much in Finland.
Tips are not included in the bill. And usually there are three main reasons to tipping culture; asshole trying to prove something, someone trying to grease you up and then there is the nice guy actually tipping because they liked that drink you made. Usually, the reason is purely selfish, but remember; we are happy to take your money and ignore your hints for a favor.

Rule number 5:
Last call means no more drinks. Also it means that it's time to head out home.
It really does. By law, we have to close the bar and you have a good max half-an-hour to get the hell out. But since we have better things to do than supervise you (like actual cleaning), it's good to be out way before the half is over.

Rule number 6:
We love throwing people out.
Seriously. Not a joke. Give us any reason. Anything at all!

I'm running out of rules here. But my point is, I'm writing at three a.m., I'm tired and people forget how to act in public when they celebrate Christmas. They make fools of themselves and can ruin someone's workday. But then again, on a payday all that bad just washes away... until next Christmas season.

Good night. Or morning? Anyway, I'll end my rant here. Oh, also; don't take everything seriously, but rule number six is golden rule.