I updated the list to include Montenegro; flights to Nis have not yet started.
However, neither Montenegro nor Serbia require visas for EEA passport holders.
Originally Posted by
Ditto
Will they go and start calculating 90 out of 180 days?
That's the document check desk agent's job! The boarding agent merely needs to check for the requisite stamp if they are presented with a non-EEA passport.
Presenting a "clean" boarding pass with a non-EEA passport means you will be refused travel.