I too will head to Poland once borders open, but not in a rush & like to see the ppl here get on over to see family who may not be so well etc.
I'd be very confident by next June/July we'd be traveling to good portion of countries, once that occurs, you'll obviously be vac'd & test negative on return & HomeQ will be the go, how exactly is one for the crystal ball one & who cares really, you'll have travelled o/s to family. Hopefully those instant testing kits will be in use somehow. Even if we have to pay $100 for it.
I don't imagine there'll be limits, just certain countries will be restricted as they've always been or 'highly not recommended'.
See you in the Krakow Rynek. It just tops our awkard Fed Sq. Just.