I agree with Peter.. You are worrying too much.. If, when received, the watch is not as advertised, return it to the seller and find another one..
As to warranty, it is only 2 years at most, and the chances of anything needing work within warranty are very, very slight. Rolex will work on any authentic Rolex though, you do not need the card for that. The card is only for a manufacturing defect, nothing more..
If you want a valid warranty, belly up to the bar and buy at an AD..
