In the scene where the waitress asks Julian what he's doing in the bar, he says "Watching football". Sonny comes over and sits down and then eventually order two rootbeers. That waitress had the rootbeers there in 4 seconds. It would take a little longer than that. Count for yourself.
Does it take 4 seconds to get two glasses, put ice in them, fill them up with rootbeer, put them on a tray, and get to the table? It takes a lot longer than that, pal.
If you've ever worked in a restaurant, you know that when you've been filling glasses for a couple years you get pretty darn quick at it.
Besides, it's a movie. What would be the point in adding 30 extra seconds onto it?? You get the same thing either way.
Any more time and they wouldn't have gotten a sip in. I've seen enough movies where people order and don't drink so many that the amount of liquid powered for movies probably equals more than the milk produced by cows in a year.
Let's think about this from a realistic perspective. If things in movies took the same amount of time that they do in real life, there would not be a movie under 24 hours long!! So 4 seconds for a drink in a movie is probably about equivalent to 10 minutes or more in real world time.
Another thing is that the camera keeps cutting and cutting, because they either keep making mistakes or they have to practice more. Think if the camera keeps coming they are going to have time lapses with the movie.
First of all it was more around 5 or 6 seconds that four, but what's a few seconds. The waitress also had a beer on the tray, but it was just one scene in a movie and it doesn't really matter about how fast the waitress was. I mean the movie isn't about the waitress.