Suave and confident Miyako is ultimately dangerous, I appreciate. Once Hinata became older that'd be trouble for Noa since Hinata might unknowingly charm other girls. Tlr: The sisters is dangerous when they're confident. I approve!
About the "hana yori dango" phrase, it actually originates from ohanami itself. It's a semi-humorous remark on how the event is nominally about flower viewing, but people really just attend it for the food and sake.
gotta eat big gotta get big gotta grow grow grow
can't stay a kid forever life is coming at you fast and you're not gonna have the mass or power to handle it unless you can eat ALL THESE FUCKING SNACKS