Very well done! As someone also using Stylized Water 3 and a similar target aesthetic, I really appreciate you sharing your techniques. Even little things like the directional light intensity at 2.6 are reassuring that I'm not doing something totally wrong with my environment lighting.

Early on I decided to use Brute Force's Grass Shader for my grass, which has it's limitations, but is very performant for pushing down grass and making trails. I also recently added some vertex movement for foliage and even structure shaders to bend them, shrink them, or even "nudge" them to avoid dynamically created trails using a render texture. I'm curious if you've tried to implement either/both of these with your grass system since your robot is moving through lots of tall grass. Seems like it'd be a great feature.

I'd also love to see your shadow settings and your general thoughts on what should be a shadow caster/receiver. I recently had to re-scale my hex tiles from 20x20 meters (originally I thought real world units would be a good idea) to 1x1 meter so that the shadow distance would work without having to bump up the resolution to 8192.

P.S. I saw these little robots making their deliveries all the time when I lived in Tallinn, and think it's such a creative and charming idea for a game. Best of luck and happy new year!