Plenty is not a word I would use. You need a specific reservation to use the luggage areas near the doors, often they are fully booked.
A group of Vietnamese joined my train last week having just got off a flight from Da Nang to Osaka. They didn't have a luggage reservation, they couldn't fit their medium size cases overhead. They had to store it in their legroom for three hours. It looked pretty uncomfortable even for a 5ft3 Viet woman. I have long legs, I ain't doing that.
Fair, I have a large suitcase and it fit overhead. I've also never had trouble reserving the space and I've also put the luggage in front of me with no issue.
A group of Vietnamese joined my train last week having just got off a flight from Da Nang to Osaka. They didn't have a luggage reservation, they couldn't fit their medium size cases overhead. They had to store it in their legroom for three hours. It looked pretty uncomfortable even for a 5ft3 Viet woman. I have long legs, I ain't doing that.