I think that moulay Rachid of Morocco and Willem Alexander of The Netherlands,are very good friends.
The Orange Royal families has good relations with every other and the moroccan royal family with no other because of Hassan II's discourtesy (especially with Queen Elizabeth).
The last sidi Mohammed now M6 was very close to Prince Laurent when in Brussels, the moroccan RF seems also closed to Albert of Monaco, a few little with the Juan Carlos and that's all !! So they are never invited in European events.