Spouses having a separate entrance to their section of the house

Q: I live with my in laws, and though I have a separate portion, bedroom, kitchen, and bathroom, my husband does not allow me to use the separate entrance or exit of that house portion. He forced me to use the door outside that goes through his parent's portion of the house.

Does Islam allow me to have a separate entry and exit from the house portion?

Using someone else's student card to get a discount

Q: I currently live in Pretoria and work in Jet Park (I travel about 128km a day to and from work). Currently I use my car everyday to work and back. I have previously looked at the Gautrain as an alternative, however it worked out a little too expensive for me.

Recently, my small brother informed me that he receives a discount on his Gautrain trips (as he is a student) but doesn't use this discount as his campus isn't so far and it's easier for him to drive. As he isn't using this discount- He had offered it to me to use his discount to travel to work.

My question - Would it be permissible to use his discount for my benefit (considering he is a student and I am not)?