I would imagine that it's similar to the restrictions imposed upon the British Royal family. Luxembourg is a hardcore Catholic country, and for a possible future leader, it's obvious that they most likely prefer someone who is already of the same religion. Not sure if this ruins your chances or not
.....
-Kara-
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[color="Purple"]What is a wedding? Webster's Dictionary defines a wedding as "The process of removing weeds from one's garden."
--
Homer Simpson, giving a lecture on marriage