Hello. I am a longtime lurker and first time poster. Before the TMDSAS match, I sent a letter of intent to my first choice school. While I did not match to that school, I was lucky enough to have matched to my fourth option and placed on the waitlist for my first choice. If I am accepted off the waitlist, do I have to accept that option due to my letter of intent even if I have found an apartment and roommates at my fourth choice. I want to be as ethical as possible and would appreciate any advice.