You have a 7-hour flight. Your tablet has 32GB of free space. The 4K version is too large. The 1080p version will drain your battery decoding pixels you can't see on a 10-inch screen. The plays for 6 hours without overheating your GPU. The multi-audio lets you switch to a commentary track or a language you understand.
You own a large 4K HDR television and a high-end sound system. To truly experience the sinking of the ship in all its modern glory, look for a 2160p 4K BluRay x265 HEVC encode instead!
For the collector who runs a Plex server for family members with varying internet speeds, or the traveler who wants the highest quality per gigabyte on a tablet, It balances resolution, codec efficiency, linguistic accessibility, and file size like no other version.
~4–8 GB depending on audio tracks and length (3h 14m runtime).