I suggest you choose a noisy restaurant or a fast food restaurant to study rather than a quiet library.
Q1. I want to express "a noisy restaurant or a noisy fast food restaurant." But if I use "noisy" twice, it'd be too redundant. So I just placed "noisy" only before restaurant. In this case can "noisy" modify a fast food restaurant, too?
Q2. Overall, does the sentence sound natural? Let me know if you have better alternatives, please.