Hello,
First of all I don’t really get the actual meaning of “please”. I understand it as it used to make a polite request. However I have rarely seen any westerner saying “please” on either Lemmy, Mastodon or IRC. where I live using “please” (मेहरबानी) is used often.
I use it constantly in the real world. Not on Lemmy. But I consider this to be pretty informal.
I also deliberately say “I beg your pardon,” instead of “Excuse me.” The former is a request. The latter is mostly a demand, at least in the USA the way people behave.
Con su permisso, or Excuse me please, when I need to move past someone. Yeah it’s a demand but a polite one I think.