Summer Activities question

<p>I'm planning on self studying AP music theory and environmetal science this summer. I will probably not take the test just because of money and many colleges do not grant a lot, if any credit for these. However, I still am very interested in these subjects, would this be an acceptable thing to put down on the MIT app for summer activites? Would it be deteramental to say anything about them on the app if I do not intend to take the tests? Also, because my school unofficially limits students to 3 AP classes a year, I will be self studying AP Spanish as well, but I will probably take this AP test. Would I put that under the self reported course work or under summer activites?</p>