This is a very modern movie theater cinema with recent technology of audio and projectors. Very slick and clean.
The only model with a 'tailored-made' texture is the theater seat. The rest (walls, floor, etc...) need shaders that have to be tiled multiple times (maybe 10, 20...). I included the PBR maps I used for these shaders, but feel free to use other materials for your cinema. In order to make the triangle shapes in the walls, you need two materials, one dark and one light, and assign them accordingly so there's a clear difference that will allow you to see the contrast and make the triangles.