Not once they find out about the perchlorates, they aren't. Everytime they go outside, they'll have to go through a time-consuming cleaning to make sure that no perchlorates get into the living-space. [0] Nothing but artificial air and manufactured water ... No flowers, no fancy restaurants, no luxury vehicles, no trips to the Riviera...
[0] https://www.space.com/21554-mars-toxic-perchlorate-chemicals...