The Tales of the World: Radiant Mythology 3 official site has been updated with a new game system video featuring an accessible floor plan of the Van Eltia ship.
Pressing the Square button while in the Van Eltia will give you access to the floor plans. With it, you can view any main or sub quests or events and conversations that can take place, as well as the specific room locations of characters within the ship.
The site also mentioned that the next update will be on January 7. Looks like we won't be expecting any character videos this Friday because of the New Year.