Personally I disagree with most of your comments in reference to a 'busy' bar. Having worked in a constantly busy nightclub myself you have to try to chillax and take advantage of the stupid nature of the customers.
Hennessy wrote:1. If you have been served at a bar, move the fuck away from the bar, especially if there are people behind you wanting a drink. I don't mind people leaning on the bar when the place is dead, but show some courtesy to your fellow drinkers.
Stand at the bar all you want. It blocks off a large section of the bar so that there are fewer customers for me to serve. Customers will move to another bar (or another section of same bar) to be served quicker because it looks like there's a long queue. Win for me
2. If you havent reached the bar yet, shouting "3 pints of tennents" over the shoulders of three guys at the bar waiting to be served is just plain rude.
This means the music in your bar is too quiet - Turn it up and customers cant do this

Pretend you cant hear them if you must, or why pretend, just don't serve them or tell them you wont serve them again if they do this.
3. Standing at the bar and ordering ten drinks, one after the other as each one is prepared, makes you look like an unforgivable twat. If you have a large order just say it in nice 3 drink divisions to give the barstaff time to calculate and make you look less selfish.
Take as long as you want customers - If the next customer is annoyed I can just tell blame the wait on the previous customer and therefore take none of the blame myself. (this is achieved my rolling eyes at the next customer whilst serving) It allows me to work slower without getting accused of being lazy. Such large orders allow me to practice my arithmetic - I guess i'm sad.
4. Have your money ready if the place is busy. Counting out coppers on a bar which is heaving is so fucking arrogant it makes me want to slap you.
I've never thought counting coppers is arrogant, stupid maybe. As bar staff this is amazing stand around and do nothing time.
6. Never, fucking ever, say "Surprise Me", as if I will then go and make you the best drink ever just because you're so awesome. Equally if you do say "Surprise Me", don't expect I'm going to make you something cheap, in all probability I'll make you something with a nice round number, as it eases the mental arithmetic I have to do with all the drink you've ordered, most of which you'll probably see again at some point during the night
Now you're just being mean and boring. This is an excuse to chat to people and have a laugh.