Just a half assed (hungover) suggestion, but could you camcreate flares inside the buildings so it appears that there is light coming from their windows. Now I don't know if goisse has any open buildings as i'm not in front of my ofp laden pc
But maybe place one in the upper room(s) near the ceiling possibly using setpos and a repeating/loop script. Failing that you could have it all in a trigger that covers most of the island, but there will be delay while another flare goes off. Maybe setpos it to a gamelogic at a certian height, using a couple different colours would make it seem like a porn stars bedroom ;D