This is NOT FINAL yet, but I won't know until tomorrow morning, so figured I could warn people it might be coming up.

I have a train ticket from Prague to Cracow (Krakov, Kraków) and back, including reservations (místenky). The dates on the reservations are 26th June night train (yes, Thursday, 48 hours from now) getting there on Friday morning, and coming back Monday 30th June (arriving at Prague early morning Tuesday 1st July). Unfortunately, it seems I won't be able to use or amend them. The ticket itself is valid for a month, I think, so can be used separately (reservations are rather cheap, 80-something CZK, and much cheaper than the ticket itself). It might also be possible to use the hostel reservation I made, but you have to pay the hostel for it (though it's on the cheap end). I only paid the reservation fees.

If there's a spontaneous soul out there interested, please write back and I'll update tomorrow if it's actually available...