Can I check when my subscription expires?

I know how to go to 'my subscription', but there doesn't seem to be any way it tells me when my current subscription expires. Is it avaliable to see anywhere? And followup question: If I cancel my subscription, do I retain whatever subscription benefits until the time paid for it ends?

Other than going to the send a request through the help desk  and asking the devs, you should be able to go to your account page and look at past invoices. It should show the date processed which gives you a rough idea of when you are charged. As for the benefitts. If you cancel your subscription, they last till the end of your current subscription duration. Supposed that you subbed for a year and canceled 3 months in, it continues till the end of your sub year. If you subbed for a month and canceled during that month, it ends at the end of that sub month.