I have a question please.
If I'm asking for something where I want to be polite, how do I say please? I'm never sure if it's correct to use 'kudasai' or 'onegaishimasu' at the end of the sentence.
Both are correct, but "somethingsomething wo onegaishimasu" is more polite than "somethingsomething wo kudasai". The latter sounds more like some kind of order to a waiter/waitress.