Forget what we've already invested. A visa gives you the right to enter and stay, but it doesn't mean that local police will necessarily ask for your papers just because you have them.
Here, even if we have our identity documents in order, authorities only ask for them if there is a reason, such as a routine check or if you're doing something suspicious.
Having a visa is not a magnet for control; it's just permission to travel.
It's important to distinguish between the entry condition and the identity request.