Oh my god, I could not work in that environment. I admire you because you worked your way up and are using the opportunity to get your nursing license. I don't have that type of ambition. You should feel proud, and when you do get that license, you can secretly say to them all, "Screw you." Of course, you are much more professional and mature to not be like that to their faces. And you're working with some people who are family. It seems family co-workers think that they can get away with more crap. Yes, I think it's ridiculous that people in your office think that someone else should be ordering their coffee. I have only one idea for that because I wouldn't know how to handle telling them to get their own coffee. Suggest they buy an office coffee maker. Where are they getting the coffee anyway, some expensive place? Why not save some money.....
Anyway, it sounds like you work in a very unprofessional environment. You should just continue to behave like the mature adult you have, and concentrate on moving on after you get that nursing license. On a side note: I've worked with quite a few Filipino people. Always extremely professional, polite, and hard working. You're culture seems to highly value respecting one another.