I didn't hear anything about the possibility UK's State Visit could be cancelled, the visit has been announced already. Gibraltar has to make some noise every year, I doubt there will be any problem with the visit to UK, I really think this visit is good for them now with the brexit, in Spain also live a lot of brits so both countries are not interested in having a bad relation between them.
About Willem-Alexander b-day, I've read the dinner with royalty will be on April 29th, if the dinner is that day Felipe and Letizia are not going to attend for sure or I think so, it's Sofía's 10th birthday. King Harald b-day, I have doubts for two reasons, the dinner is in May and that month is Sofía's communion and maybe Queen Letizia's cooperation trip to Senegal.
Japan's tiara: I vote for Ansorena Princess.
About Willem-Alexander b-day, I've read the dinner with royalty will be on April 29th, if the dinner is that day Felipe and Letizia are not going to attend for sure or I think so, it's Sofía's 10th birthday. King Harald b-day, I have doubts for two reasons, the dinner is in May and that month is Sofía's communion and maybe Queen Letizia's cooperation trip to Senegal.
Japan's tiara: I vote for Ansorena Princess.