I addressed this point somewhere else, but basically Worf of now doesn't hate Romulans as much as he did during TNG's run. Worf was able to hold down his hatred of Romulans during the Dominion War, sitting at briefings with them and coordinating with his Romulan counterparts on battle tactics and so forth. Indeed, even in Nemesis you can see Worf's attitude towards the Romulans has shifted since he even notes the Romulans who helped the Enterprise fight the Scimitar fought and died with honour. And there was a deleted scene in the movie where Worf is critically injured fighting a Reman and only survives due to emergency surgery performed by a Romulan doctor. So with this in mind, should Worf ever visit Picard's vineyard, I see him being civil and polite towards Picard's Romulan friends. Perhaps it's an awkward conversation for all involved, but he's not going to start screaming "away from me and die, Romulan petaq!" Besides, I doubt even at the time of The Enemy Worf would wish death upon civilians and children, nor do I see him objecting to efforts to save civilians and children, even if they are Romulan.