Minecraft Realms on Bedrock should support per-player resource packs.

When playing with my family, across long distances, or when playing with them at home, we don't all like the same texture pack. My father likes the city texture pack, but I don't, and I like the classic texture pack, but he doesn't. I own the realm, and there is no way for me and my dad to use texture packs that the other can't see. I would like it if players could use their own texture packs to make their own experiences better. This would function similar to java, where the resource pack is not server wide, but player specific.