I'm surprised you're noticing how Naruto and Sakura look and not commenting on the fact that Sasuke (aka the moodiest guy around) is smiling in just about everything there. It's weird looking.
lol I think it's packaging for some sort of food and yeah it's pretty weird seeing him look so happy. If I remember right the movie is set on a different timeline. One where Sasuke is still at Konoha and I think Minato is still alive?
and why does sakura look shyly happy and naruto surprised