I can only speak as a married woman, but I'd think the 'lots of glances in a short span of time' showing interest is the same worldwide. Humans are humans, and being physically attracted to someone else, and wanting to look at that person, even in short glances, is human nature.
I have never understood the '3 day rule' for phone calls. Some men see it as not wanting to appear desperate, but a lot of women see it as the man wanting to play the game by his rules, or as some silly macho need to show he doesn't need a woman. If you are interested in each other, why waste three days? You can call and set up a date for a few days later, I suppose, but it is silly to wait to call.
My reply probably isn't much help since I haven't done any dating here, but I wouldn't overthink it, go with the flow, and ask for a phone number, call her, and see what happens. Nothing ventured, nothing gained.
