Hong Kong Airport Express Pass $350

Hi, please correct if I'm wrong.

1) If I understand the rules correctly, the return ride to the airport via Airport Express (If I purchase the $350 pass) does not have to be completed within the stipulated "3 consecutive days" itself?

2) After the end of the stipulated 3 consecutive days, I can reload the pass and use it as a normal octopus card for the next few days?

3) Am I entitled to the discounted fare for octopus pass using the express pass, after the 3 consecutive days?

Many thanks!!