I watched the complete video and can say a few things.
First, that girl is considered attractive over there in the same way Kim Kardashian is considered attractive over here. Enough said.
Of course they didn't let her fly or take off the plane as the media reported (both there and here). All they allowed her to do in terms of handling controls, is advance the throttles.
They also lit up the cockpit so she could film it properly... in a night flight
The whole take off was a mess, with her talking and acting all excited, and the pilots kind of in a party mood.
I think as they reached about 80 kts (and I'm not sure about this, this is what an airline captain that watched the video said to the press, I didn't pay that much attention) the captain gets "serious" and tells everyone to shut up.
I guess the danger was in that it was a party take off. If everything went routinely then all is good, but things could have gotten ugly. I think there's a reason for the whole sterile cockpit during critical phases of flight.
As for the passengers suing, I don't know, I see it as passengers of a bus suing if the driver is found to have been drunk during the ride but no harm was done.
I'm not sure that would hold, and I'm not sure this one wil hold either.
On the other hand, I've read they were going to criminally charge them, which I don't disagree with. Sure, no harm was done in the end, but we criminally charge people for flying drunk even if they successfully complete the flight.
Fun trivia:
- You can hear the captain saying: "You are not going to publish this, right?, if I go down you go down with me". Of course she says "no, no way".
- She actually tried to sue the pilots for sexual harassment after the whole thing blew up.