Pretty difficult to do, unless you have his e-mail address.. You may want to post ths in the crew section on these boards. You never know, he may read these boards and get in contact with you, worth a try.
I would agree with Phil that a note sent to John is the easiest way.
COMPLETES THE FLEET
If it is Carnival and it floats....we have sailed it!
Hubby ... DIAMOND (every ship except the Carnivale)
Me ... DIAMOND (every ship starting with the Tropicale)
20 year old son ... DIAMOND (every ship starting with the Tropicale...he is the only DOUBLE Milestone under the age of 21)
24 year old son ... DIAMOND