We are just back from Venice. We took a water taxi from the train station to a landing near our apartment. The taxis are regulated and (supposedly) have meters, and we expected the cost to be about 65-70 euros. Our driver at the landing quoted a flat 70 euros, which we agreed. We paid by credit card - every vendor in Italy now seems to have cellular-connected portable charge terminals. It does seem that taxis arranged through a booking service charge close to double this, paying the middle-men and taking tourist profit, so understand what rate is agreed. The metered rate covers up to five people, with another five for not much surcharge, so if you can share a ride it's cheaper. The vaporetto is now 7.50 euro per trip.
BTW, almost all charge terminals in Italy now accept tap-cards, which is easier and faster than sliding the card in and waiting for the chip to be read.
BTW2, hardly anyone was wearing masks in the street, but most put them on in shops, and everyone diligently did on public transport and official places (e.g. museums).
BTW3, there are a couple dozen pharmacies around Venice that do rapid-antigen Covid tests for travelers, e.g. those needing one a day ahead to return to the US. Any pharmacy should be able to point you to the nearest one that tests. The fee seems to be standardized at 15 euros.