There was literally no reason that they should immediately hate each other like they did. Think about it (and I urge you to think!): they were at the same summer camp so they both like OUTDOORSY things. They met while fencing, so that's another thing in COMMON. I can get behind Hallie sort of being pissed that she fell into a bucket of water, but for 11 year olds, that should result in passive aggression at best.
Yes, I am talking about putting the beds on top of a cabin. This one bothers me so much. How did a bunch of 11 year olds climb onto the roof, disassemble, reassemble and also make the beds of all of the other campers without ANY ONE OF THE ADULTS saying anything. And we're meant to think that the whole "putting the stuffed bear on the flag of England" thing was nailing the coffin SHUT.
Hallie I sort of get. She runs around and rides horses and plays all the time. But Annie? A fancy British girl traveling internationally to go camping? Clearly she doesn't really care about this whole outdoorsy life since she came to the camp in a limo with her butler wearing a pinstripe business skirt and jacket and HEELS. So why is she there in the first place?
These girls are firecrackers. Puberty, am I right?!* (*I am not. This is just insane behavior.) Falling into a bucket was grounds to launch the Camp of Hell and then helping each other close a window that was tough to close because of the wind was grounds to figure out they're twins and then create a "foolproof" plan to trick their parents back together. Because now they love each other. Also what's up with isolating two preteens in a cabin in the woods? They're getting a better deal than anyone else.
They were BOTH PLAYED by Lindsay Lohan. Which means they look IDENTICAL. They are the exact same person! They didn't even think they were twins until they were all, "WE BOTH LIKE PEANUT BUTTER WITH OUR OREOS?! WHAT?!" And THEN they figured out the "same birthday" "same parents" "same DNA" thing.