Here's a rough translation what I could pick up.
0:32--After they bind her wrists, you hear in the background "Approach! Come closer!"
0:37--When the camera first approaches, one of the costumed guys asks "Is she ticklish?" She at first casually says no, but her family members then say "Yes, very ticklish!" Then Marie's casual "No" becomes a more frantic "No! No! No!"
Then one of her family says "Her tummy!" Then another one says "Her sides!" Then you hear "Actually a little bit everywhere."
0:55--The tickler then stops and says "Anyone want to try?" After no one moves for a bit, he says "Or else there's no point." Then someone says "Go ahead."
1:10--As he resumes the tickling, someone says "Try the neck too!" At the same time, he starts tickling her armpits, and I think he teases her about how gross it is in there with the sweat (though I'm not sure). At this point, her family member says "She doesn't have deodorant on!" and everyone laughs, and the tickler waves his finger nears her nose. This of course leads to the shoe thing, while her family member says something like "Now that is barbaric!"
2:08--The tickler finds a blade of grass or something and he says "This is like a feather." Marie looks down and says "Oh no!" She then tries to hold the laughter in, while her family member seeing this shouts "Go Marie! You can't stand this. Go ahead and scream!" She holds it in while he continues at her feet, then her bellybutton, but she does let out a laugh when her armpit is tickled.
2:40--The tickler hands off the "feather", and Marie begs "No no!", but her family member says, "But this is what I want to do!" After he decides to use his fingers and gets a better reaction from her, you hear someone say "Oh yes [there you go]!"
I can't figure out the audio when he goes after her underarms more thoroughly (sorry).
The only thing I can figure out is at 3:36, when he finally moves the cardigan and starts tickling her bare underarms. She starts giggling and simply says "No! Stop! Stop! No!" [I know, it's like your standard tickling story, but that's what she's saying.]
3:49--Her tickler says "So, how goes?"
The costumed guy says "Ok, so do I let her go?"
To which her family says "No, keep her there." [This of course make us wonder if there was more to it, though after 2 + minutes, I doubt it.]
By the way, I think she personally knew one of the costumed guys, since she calls him out by name right before she starts getting tickled.
Anyways, there it is. Like you, I really like this kind of mainstream clip!