Originally Posted by
ISTFlyer
The reality is that all big companies such as KamilKoç ( Flixbus ), Metro, Pammukkale, Ali Osman Ulusoy, etc... are checking HES codes and vaccination details properly but some small companies that are based in the Eastern part of the country wouldn't even care about HES code verification ( thus vax and PCR as well ) and some people purposefully chooses these companies for this reason.
Thanks. Very informative.