If he marries and not help it become Formal, then she doesn't have a title, if they have little ones, then they can get a title only. but being an Emirati I thought I could answer your problem about sending cards to Royals right here in the U.A.E. Very well https://dubairoyalmembershipcard89012.bcbloggers.com/32155694/dubai-royal-family-members-an-overview