This is my first international flight on Delta (just got SM through domestic travel) to the Philippines in Business. I looked up the jet on Seat Guru and it is a 747 double decker. Wanted to get any advice on what to expect and what to take advantage of. All of my travel group are experienced international travelers and I dont want to look too much like a n00b.

I am leaving out of Detroit to Narita and then to Manila. All advice welcomed.
Thanks in advance! John