2/3 rds of a bottle of wine later it's a bit of a generalisation, and you really need to do a bit more research than here if you don't know the former East before joining Wizz. . . but
Romania, my other half is from there and doesn't want to go back, if you were single I might disagree with her advice
but you mentioned family.
Bulgaria, well, even the Romanians avoid it
again if you were single, it could be "interesting"
Sounds like the safe option "en famille" is Poland. Just watch out for the p1ssheads driving home at closing time and you'll be fine. Oh, and you are not single , so take care with the other "temptations " too