I have two questions about the wedding. The first one regards the order of precedence in the seating of royal guests at the Abbey, and the second question (which has two parts) relates to the liturgy itself.
1. It makes sense that reigning monarchs were sitting in the first row of royal guests: Margrethe of Denmark, the Grand Duke and Duchess of Luxembourg, the King and Queen of Norway. If I have it right, I believe that they were seated in order of oldest to youngest monarchy (i.e., Denmark is the oldest, so Queen Margrethe got the best seat). After the reigning monarchs, the Crown Princely couples were seated... but why were Philip and Mathilde of Belgium seated in the first row and given precedence over Willem-Alexander and Maxima of the Netherlands? If I have my dates right, the House of Orange-Nassau has reigned in Holland since 1815, whereas the Belgian monarchy was not instituted until 1830. Is it because the Belgian royal family is from the House of Saxe-Coburg-Gotha and therefore "family" of Queen Elizabeth II? Also, the Bourbons of Spain - who have ruled since 1700 - were seated after the Belgian and the Dutch crown princely couples. It was also interesting to see that Queen Sofia of Spain - a Queen Consort but nevertheless a Queen - was seated with her son, Prince Felipe, and his wife, rather than in the first row. Any clues as to what aspects of protocol might have shaped the seating arrangement in this way?
2. I am reasonably well acquainted with - and very interested in - Anglican/Episcopal liturgical practice, and I was surprised to see that at the end of the service:
(a) the bride and groom processed out of the Abbey after the clergy, including the Archbishop of Canterbury, and
(b) the congregation remained seated when the Cross was processing out of the Abbey, but everyone stood for the bride and groom at the end.
I'll confess that I found both of these things somewhat shocking, as they give human beings (in this case the Duke and Duchess of Cambridge, whom I find lovely but who are still mere mortals) precedence over God.
I'd be very grateful to anyone who could address any of these questions!