Large files in GO Vacation [Switch]

[AtomicLugia]

Thanks to Switch Toolbox, I managed to get pretty much all the files from the game. But in the archive, there are 3 large *.DAT files:
RIZ.DAT - 397 MB  (found in the RIZ folder)
SHD.DAT - 140 MB  (found in the SHD folder)
DISC.DAT - 3,38 GB  (in the root folder)

I'm pretty sure these are archive files, like the WTA files that Switch Toolbox now can open, probably containing the maps of the resorts and probably the animations for the models.

Should I provide these large files to check out? I tried everything I can but no luck. I would be very grateful!