I specifically request no children younger than 16 be at my wedding
That's an odd request. Why don't you want young children there?
They would make a mess and disturb the guests
Its not that terrible if the kids make a mess. It could be fun. Disturbing guests is not usually anything anyone worries about either.
I don't care about other people. Them kids aren't welcome.
Well, I do hope you will reconsider. Kids can actually make any gathering more fun with what they do and say.