The size is amazing, but what year was it ? It doesn't look like 1914 visit . Unless they wore diffrent outfits during that visit....quite possiable
In 1914, indeed. Note that the characters are numbered on the picture. Thus, it is recognized by :
1°) Prince Carol of Romania
2°) Prince Nicolas
3°) Princess Marie - Mignon - of Romania
4°) and 5°) Marie and Anastasia of Russia
6°) Tsarevitch Alexis
7°) Grand Duchess Tatiana
8°) Crown Princess Marie of Romania
9°) Grand Duchess Olga
10°) Queen Elisabeth of Romania (Carmen Sylva)