The "having a script" thing may have merit or not but this them being swingers is more of what I think is going on. From the beginning in apt 2, both guys fucked Petra, and now she doesn't seem to have any bit of care that both guys are fucking other girls. Sounds like swinging to me. And another poster made the comment about VV trying to be more like a college dorm experience and I also think that is spot on.
Watching couples is boring, boring, boring. Especially when the couples themselves are boring, they fall into a tired old routine that gets dull after only a few weeks. Other than having excellent camera quality, there isn't a single interesting thing about any of the couples of RLC. Maya is my favorite girl there but I'll be damned if I spend more than 5 minutes a day watching her cam. Even the sex addicted Carla and Mario are getting stale.
I said in a post a few days ago that VV is the most exciting voyeur site out right now, and it is because they try to be something different and offer something different. Everyday or every few days is the opportunity for something new and interesting to happen. It might be really good, like the group sex they had or seeing Dizi getting the brains fucked out of her skull. Or it might be really bad, like knowing your girlfriend is getting the brains fucked out her by another guy. But that's the fun of watching a site like this.