When Holly is playing the card game with Maddie, the red card starts on her right. She then swaps it with her far left, then to the middle, then back to her right, which should mean that it is the far right card. When Maddie picks, she "correctly" picks the card on Holly's far left instead.
The phone Zack was supposed to take a picture with actually has no camera.
Just before Esteban jumps on the bed, you can see the corner of a blue trampoline.