It is a good idea to write to the National Archives in Bucharest in advance of any trip to the country, copying your letter to the county archive(s) you wish to visit, in order to get permission to have access to the archives. This correspondence can take some months (it took a year when I wrote, but I contacted only the Suceava county archives which then forwarded my letter to the central office in Bucharest, taking up more time than necessary).
It may be that they have sped up the process or even now make exceptions for polite foreigners with cash. I really don't know.
My letter to the Suceava county archives was not so much about gaining access, though, of course, that interested me, but in learning more about what records, precisely, they hold for the parishes I am interested in and learning whether or not they have a printed inventory of their collections. They never answered those questions, something I found (and continue to find) very frustrating as a serious researcher.
I hope that you have better luck in your experience with contacting and accessing the State archival system in Romania. It would be interesting to see you post your observations on those experiences to the list when you return from your March trip.
Good luck in your research endeavours. Have a safe and successful visit to Romania.