If you look carefully at the laptop during the time when Morgan and Christina video chat with the Ross kids, you can't see a webcam on the laptop, so there could be no way they would connect unless the webcam was built in the computer.
The Keys that Jessie and the Others tried to get while put behind bars with a Large Plastic Candy Cane could've still been picked up after having dropped to the floor, by pushing it over then picking it up from below.
Right before bertram falls into the fridge after he is hit by zuri you can see he already has the pineapples over his eyes.
Ravi had been adopted by the Ross Family for at least a year by the time Jessie started being their Nanny, but in this episode, Ravi doesn't seem to know much about Santa Claus having come from India, even though he would've had a Christmas after having been adopted once before.