<p>How hard is it to switch majors once (and if) I'm accepted? For example, if I become unhappy with my chosen major during the later bit of the highschool year, will I be able to easily switch at the start of university?</p>
<p>The "indicated" major is just to give them an idea of what you are interested in. You are in no way locking yourself into that. You don't even officially declare a major until sophomore year. After that, it's easy to switch as long as you have enough time to complete all the requirements of the new major (and the distribs).</p>