6 sentences

1)When a parking lot is above a shopping mall and there is a sort of spiral road leading to it (it goes up and around sharp bends), would you call each part ' a switchback' ? For instance: I have to drive through 4 switchbacks to get to the parking lot. It always makes me feel dizzy.

2)If I give a deposit to a receptionist at a hotel and I want to make a joke and ask if I'll get back less money, could I say something like: Does it come with interest?

3)The contract cannot be in breach of law. (It has to be in accordance with it.) Is this correct?

4) If I want to claim my right to an estate and I have to sue someone, how do I say that I have to 'enforce my right through lawsuit'. This version sounds rather clumsy. I want it to be slightly formal though.

5)What do you call the minimum amount of money that is needed for life?

6)When I transfer ownership to someone else, is it called 'conveyance'?

Thank you so much. I'm sorry for posting more questions at the same time, but I thought it'd be easier than posting 6 different threads.