I visited this WHS in November 2018 basing myself in Ravello for 3 nights. Even though I enjoy roads with lots of hairpins and heart-stopping curves, I would avoid driving during the peak summer months. Parking, traffic and driving in general can be a nightmare even during Autumn-Winter so I can't imagine what it's like in the summer months.
Even though there are several hiking treks and panoramic viewpoints over the Mediterranean, I very much prefered the ones to be had at the Cinque Terre in Liguria. Overall, from land I found it quite similar to the Cote d'Azur in France. I promised myself to revisit and explore the Costiera Amalfitana by boat which I think could be a better alternative to enjoy this WHS.
My personal favourite viewpoints were from the narrow roads and few parking spaces just before (top right photo) and after Positano and from the expensive Villa Rufolo in Ravello. My favourite cathedral exterior was the one in Amalfi while my favourite interior (mostly because it surprised me) was the one in Ravello with its mosaic and marble pulpit by Bartolomeo (bottom right photo). Another worthwhile viewpoint is from the roof terrace of the Chiostro di San Francesco in Sorrento at sunset from where there are excellent views of the Costiera Sorrentina, the Stacks or Fariglioni of Capri (bottom left photo) and the Vesuvius in the background on one side, and the Costiera Amalfitana on the other.
From Ravello, I must say that my favourite stretch of the Costiera Amalfitana was the one from Positano to Praiano, even if quite touristy and crowded, while I absolutely loved the restaurants and welcoming locals around Vietri sul Mare and Maiori. The fresh fish and lemon sciatielli pasta were divine and more fairly priced than the other tourist traps along the Amalfi Coast.