Bryan Rule
Google
Don't take that silly tram. Take the walking route from the dock! You'll see lovely lovely flowers, lemon groves, and architecture along the way. Plus you won't spend 30-60 minutes in line for a ~2 min ride.
The Piazzetta itself was... Very busy. Pretty area. Great views of the sea in certain spots. I know the plaza management itself can't necessarily control this, but you won't find a restaurant, cafe, shop, limonata cart, etc. charging reasonable prices. Expect a premium cost on everything. I'd personally recommend finding less 'touristy' areas in Capri or Ana Capri to get lunch, beverages and such. Nice to walk through, get something small, but don't drain your wallet here. There are other options if you're willing to walk a bit.