Cassie would be there of course, and you pretty much summed up her reactions. She is generally a giggly person when drunk or stoned anyway, so it's all gooooood.
Kate totally has to take part. She's only 1/4 demon and 1/4 gifted human so I can see her being totally freaked out by it. Anyone want to have to calm her down or distract her?
Mia came, but couldn't take part in the experiment since she's usually food for the feeding class or other vamps. She seemed amused though, and probably stuck around to play babysitter if they needed it. She might even volunteer to do the same again if it amuses her enough.
Pearl would play babysitter, but not partake herself. Very friendly and helpful though.