Yamada size popcorn is for sharing? If you say so, girl. Confident that she has a similar metabolism that I've had for as long as I've known, she could totally down that thing all herself and not have any lasting negatives. The power of tall people, especially when they're still growing.
Heh... of course she wants to sit on the side that lets her look at his face at a glance.
And yeah... you want to know about the things that make the one you love enthusiastic. I had more interest in Japanese culture while I dated my ex who studied that sort of stuff in college and exercised the knowledge to present panels on the subject at conventions. In general, she was interested in just about any culture studies, not just Japanese. She even found EVE Online's social microcosm phenomenon fascinating.