[joli160]

1. Nothing extra, a resellers warranty is as good as any other.

2. Out of warranty you just pay regardless where you bought it. They don’t care.

3. Major concern for me would be non original parts and poor refinishing.
In my place it takes 4 years of study to become a watchmaker and add to that the additional training required by various brands.
Someone called a watch guy sounds not very convincing.

4. Nobody ever asked for my passport details when buying a watch. I always refuse entry in any shops data base and don’t entertain customer cards or memberships. Should be no problem.