I cannot comment on the Danes, but I am not aware that the Swedish royal family uses French in private. Do you remember where you read this?
I didn't.
When it comes to restoring the monarchy in Romania, there are two choices and two possible ways of going about it.
1) The Royal Family, with the King at its apex, forms the basis of a restored and continued reigning dynasty, with historical links through the King and his predecessors. If the Royal Family is to return to the throne, it will be either via female succession of his eldest daughter, of whom he has five, or it will bypass his daughter, to go to the first eligible male, his grandson Nicholas. A male heir will settle the nerves of those who are nervous about female succession, but those with such problems need to get over them, as female succession is today as normal and acceptable to a population as other, formerly controversial societal changes are becoming.
2) A member of the House of Hohenzollern, that once provided the basis for the current Royal Family, and who could again be asked to do the same.
When it comes to 1), what speaks for it, is their presence in Romania today, as opposed to 2). They represent the King, the last monarch of Romania, as opposed to 2). They're engaged in Romanian society and have connections in every area vital to anyone with aspirations on behalf of the monarchy, which requires a systemic change, as opposed to 2). They have declared their interest in serving Romania as the people would want them to, as opposed to 2), who have declared that they are not interested in the Romanian throne.
When it comes to 2), what speaks for it, is that some see them as the legal heirs to the Romanian throne through the last constitution involving the monarchy of 1923, despite it being abolished 69 years ago. They do however represent the family that the Kings grandparents stem from, despite 1) still having the same heritage, despite not using a foreign princely title anymore. 2) has never objected or protested the suggested changes by the King to the line of succession, should the monarchy be restored, that proposes that 1) continues to reign as the Royal Family of Romania in the event of a restoration, and that fundamental and universally approved principles across Europe about human rights are implemented.
At no point has 1) demanded the restoration of the monarchy in Romania under a female ruler, but the King has made it clear that his family will not reign again, under what is now seen as rules and restrictions that are out of date and not in keeping with monarchy or society in a Western nation.
At no point has 1) stated that they are entering into an arrangement with the government to avoid restoring the monarchy.
At no point has 1) withdrawn from Romania voluntarily. The King was exiled, and since the return of 1) after the fall of communism, the Royal Family has actively worked charitably and in areas they have been able to, to the benefit of Romanians.
At no point has 2) made any public statement or in other ways made clear their disapproval of the actions of the King with regards to succession, transfer of power to the Crown Princess, designation of titles in Romania and so forth.
At no point has 2) ever publicly demanded a return to the monarchy in Romania, and at no point have they sought to collude with those who today claim the illegitimacy of the Royal Family continuing after the King.
At no point has 2) in any way supported those who are actively working to displace the Royal Family when it comes to the future of the monarchy in Romania.
The Romanian Royal Family is aware that no monarchy today in Europe, can exist without cooperation with politicians and civic society. They have cleverly sought to build friendships and relations with those who are today in positions of influence and power, knowing full well that nothing, absolutely nothing will come of making enemies out of those who can help you achieve your goal. The Royal Family is fully aware that in every society there are people who oppose your actions, and within every community, there are those who disagree with your choices.
The only thing that puzzles me, is why some spend so much energy sabotaging the only ones, the only ones who are actively working towards a future for the monarchy in Romania, the Royal Family and the Custodian.
Fortunately, the politicians in Romania are far more respectful than some who claim to support the cause, and they are far more appreciative and attentive to what goes on in their own society than those who actively hanker for days that are so long gone by that they will never return.
It is clear from every piece of factual and anecdotal evidence up to this point, that there is just one way forward for the monarchy in Romania, and that is through those who represent it every day, actively, in their own country, like it or not.
As nobody would had predicted the current changes taking place just a short while ago, it will be interesting to see what comes next. I am certainly very hopeful!