Originally Posted by EK017

I would undoubtedly fly first class in the Square over business class in the room. As others have stated, its pretty tough to get ANA first class availability. Despite the Room being a better hard product, you can't beat the more personalized service you get in first class as well as the privacy. 8 seats vs 60+.

There are 3 other very important factors as well. ANA's first class lounge at Narita will be far less busy than ANA's business lounge (which is a priority pass lounge). If you get there a few hours early, you can enjoy the first class lounge and the food if you so choose. Another major factor is that ANA's first class menu is the best when flying out of Japan. That is something you don't want to pass up on. First class full menu vs redeye business flight menu? That's a no brainer.

Lastly, if you are bringing back a lot of luggage, first class is allowed 3 checked bags as opposed to 2.