Yes Yes Yes! Please ask those seemingly silly questions that are lingering in your brain. You know the ones! I find when learning a new language laughing at yourself and feeling silly comes into a daily routine. Did I pronounce that right?...Did I say the wrong word?......and never mind those sticky conjugations, and formality!!
Learning a language is no easy undertaking, however it makes it a lot more fun when you are able to "lighten up" and have a laugh our loud moment with your classmates and yes even the locals. Don't ever feel back for asking a question that to you might feel silly, because I bet you there are more students/travellers with the same exact question.
Have fun expanding your mind!!