Just chill !! Come on guys... you dont know such simple things ? Key is not going to cause any problem... period... And getting the key out of there is also not a big problem either... like someone mention.. when you clean the car or change upholstery just tell them to recover the key... anyone can do it.

As for the disk... i dont think it is an issue either... seriously.. think about real car issues such as breaks, tires, engine, suspension... and dont forget to service it... something dropping somewhere not gonno do anything.. car is not a delicate darling.