I have a continuous 1st Class Interrail Pass and I want to take the 08.22 EC273 from Brno to Gdansk on Saturday 15th July (tomorrow). I went to the information desk at Brno train station yesterday to make reservations for the two legs of the journey which involve Polish trains and successfully bought a reservation for the Krakow-Gdańsk leg. However, the Czech lady I spoke to at the desk indicated that it was not possible to purchase a reservation for part-Polish section (Breclav-Krakow) of the Brno-Krakow leg of the journey.
Can I still board the train and travel to Krakow without a seat reservation if I am prepared to stand all the way?
If not, am I able to exchange or get reimbursed for the reservation I paid for (Krakow-Gdańsk) in order to make my journey on another date when I can reserve seats for the entirety of the Polish sections of the Brno-Gdańsk trip?