Certainly no impact on buses at the moment, just returned from putting someone on the 3:30pm Chania to Heraklion and maybe only 10 people on the coach.
As the situation changes and then changes again within a day there is no answer to what the situation will be on the 28th September.
Around 27th August there were rumblings of a potential big strike, a General Strike, around the 28th September but nothing subsequently so it might pass unhindered but again it could raise it's head in the next few days. No telling.
As soon as there is more information we will post it.