Hypothetical (1) - it will not work, only because they will be checking on more of an ID number basis, which they scan on their own, and will be able to tell that she is not a true enforcer.

Hypothetical (2) - if they stay in the more public areas for more than an hour they will be found. The further they go into the city, the dirtier areas (such as close to the Races), will take much longer - closer to three to five hours. If they get caught, they will be asked to return to the Hostel and their rooms. If they resist, they will be tazed to a point that the natural beings pass out.