Thought this would be fun, and mods feel free to delete if you think it is a waste of space.
Lets predict who will make up the wedding party for the wedding on 24th May
Obvious- Princes Nikolai and Felix
Prince Christian
Other royal children perhaps Count Richard and Countess Ingrid von Pfeil and Klein-Ellguth.
For a couple of flower girls perhaps Marie has young nieces
For the older members of the party I'm not sure as I believe Marie only has brothers.