I think I've got thus figured out, but wanted to make sure I understood correctly....in order to avoid an unpleasant surprise.
From researching this, it appears that proof of vaccination with either 2 covid vaccines or with the Booster (valid for 270 and 365 days from vaccination respectively) is one of the criteria which allows entry into Croatia.
Proof is provided by producing our paper vaccination certificates ?? I looked into getting an EU covid certificate, but it seems typical US citizens are unable to get those ???
Appreciate your help
BT