Phonetics and Immersion Camp?

By attending an immersion camp (I am 18 years old), will I be introduced to the target language in a way that will further enable me to refine my accent? Or will I be tossed into a group of people (to whom I'm required to speak) that mispronounce things, consequently disheveling the accent I have so far managed to ingrain in my natural speech? Thank you for your responses.