Beer bars usually don't get going until 4pm. You will only find a few that are open 24 hrs and they usually have women that are no so attractive. The hotter looking girls usually take the later shift to show up for work for a few reasons. The better ones will show up around 9pm and work maybe an hour or so. The minute they show up at a crowded bar with a bunch of drunken, sex starved guys, all eyes focus on the newer, better meat. A couple of ladies drinks for them and they are off to enjoy the night with the guy dining, dancing, a little shopping and back to the room for some good ole fun. The girls that are hungrier that are hot will will show up around 5-6pm and do about 3-4 short times and then call it a night and go home to their room and count their money.
Beer bars are good to go to for a few reasons. The girls are easier to talk to since there isn't blaring music in the room. Their English is very limited most of the time so if there is somewhat quiet, you'll be able to talk with her enough to find out if she really likes you or does she just want to bang your nuts off for an hour and go back to the bar.
Short time is great if you don't like the after sex cuddling and morning sex. I would say the percentage is bigger that the girls like short time more than the long time sleep over sex. They make more money doing short time in a night than they do on a long time job.
However, the ones that insist on long time, seem to be a bit more nicer, warmer experience.