discrimination
I don't think there should be any discrimination between married and singlies.
If anyone has made a 'lifestyle' choice to remain in their own property but be accommodated at a unit then they should pay the same as the singlie.
The majority of pers at HQ Air who live in the messes are 'bean stealers', yet have the same standard of rooms as those who are single yet pay a significantly less. Where is the fairness in that?