Hi Peter,
I feel it will be terribly busy at the Maasmond. Since the Maasvlakte 2 is operational, this is the only good place to take pictures on arrival. It is be reachable by a two-lane road only and there will be a lot of people attending.
Any new large vessel attracts a crowd here.
The other vessels are within easy reach. TI Europe will be at the Landtong and the Vale Rio de Janeiro at EMO. Please see separate thread.
You may consider having a meal at the "Veerhuis" at Rozenburg. It is situated outside the village next to the Rozenburg-Maassluis ferry. Since it's on the riverbank you have a good view on shipping to/from Rotterdam from it's terrace.
Rgds,
Robert.