The first day I would build
Give the city one clear route before adding extras.
- Start with Pietermaritzburg City Hall and KwaZulu-Natal Museum while energy is high.
- Use National Botanical Garden as the natural reset instead of crossing town too early.
the easier plan is City Hall and KwaZulu-Natal Museum first, Botanical Garden later, Midlands Meander only with a car day. That keeps the day readable instead of turning every good name into a separate detour.
I would rather leave one place for tomorrow than drag a tired route through Midlands Meander just because it looked close on a map.