Question about May 1st Deadline and Fin. Aid Packets

<p>If I don't plan on attending the school and submit the card saying this, do I still have to personally decline the fin. awards on the packet the college gave me?</p>

<p>Also, if I do plan on going to the school and sending the postcard saying I will do so, do I have to accept the school's fin aid packet or portions of it by the May 1st deadline?</p>

<p>Is the May 1st deadline postmarked for every school?</p>

<p>Thanks!</p>