They're not exactly tourist friendly. 

"Venice tourists may be subject to a new no sitting rule.  The city's mayor, Luigi Brugnaro, has proposed a fine of up to 500 euros (or about $588) for anyone who sits or lays down in an undesignated spot, according to CNN and the Guardian."

https://www.usatoday.com/story/travel/destinations/2018/09/22/venice-tourists-could-fined-588-sitting-down-public-places/1394227002/

Sounds OK to me. Just send them to the US market & it'll lower our prices for all the new ships. 

I wonder why they didn't chose another port for turn-a-round?

There are others reported:

September 2018   
The Alaska DEC issued the following Notices of Violation for 2018:
Noordam - Unauthorized discharge of untreated graywater
Star Princess - Unauthorized discharge of untreated graywater

    Water pollution
July 2018   
The Alaska DEC issued the following Notices of Violation:
Volendam - Chlorine
Island Princess - Chlorine

    Water pollution
June 2018   
The Alaska DEC issued the following Notices of Violation:
Golden Princess - Fecal Daily Max, fecal monthly mean, BOD daily maximum, BOD monthly average
Ruby Princess - BOD Daily Max and monthly average
Star Princess - BOD Daily Max and monthly average
Emerald Princess - pH Minimum
Eurodam - fecal coliform monthly mean

    Water pollution
May 2018   
The Alaska DEC issued the following Notices of Violation:Emerald Princess - fecal coliform daily maximum
Seabourn Sojourn - BOD daily maximum

    Water pollution
August 24, 2018   Amsterdam, HAL
The ship was cited for air quality violations in Ketchikan.       Air pollution
August 17, 2018   Radiance OTS, RCI
The ship was cited for air quality violations in Seward.       Air pollution
August 10, 2018   Emerald Princess
The ship was cited for air quality violations in Ketchikan.       Air pollution
August 9, 2018   Golden Princess
The ship was cited for air quality violations in Juneau.       Air pollution
August 8, 2018   Radiance OTS, RCI
The ship was cited for air quality violations in Ketchikan.       Air pollution
August 2, 2018   Eurodam, HAL
The ship was cited for air quality violations in Ketchikan.       Air pollution
June 20, 2018   Westerdam, HAL
The ship was cited for air quality violations in Haines.       Air pollution
June 19, 2018   Nieuw Amsterdam, HAL
The ship was cited for air quality violations in Ketchikan.       Air pollution
June 19, 2018   Norwegian Jewel, NCL
The ship was cited for air quality violations in Ketchikan.       Air pollution

I wonder, is Princess the only cruise like that had violations?

Claimed notices of violations provided to the Juneau Empire. The air violations are based on visual opacity readings with the date and port provided. The wastewater violations are for discharge of wastewater or exceedances of state permit limits. BOD is biochemical oxygen demand.
 
Air Notices of Violation for 2018:

Emerald Princess   8/10/2018 Ketchikan reading
Golden Princess   8/9/2018 Juneau reading
 
Wastewater Notices of Violation for 2018:

Star Princess   Unauthorized discharge of treated graywater
Emerald Princess   May 2018 fecal coliform daily maximum
Golden Princess   June 2018 Fecal Daily Max, fecal monthly mean, BOD daily maximum, BOD monthly average
Ruby Princess   June 2018 BOD Daily Max and monthly average
Star Princess   June 2018 BOD Daily Max and monthly average
Emerald Princess   June 2018 pH Minimum
Island Princess   July 2018 Chlorine
 
source: cruisejunkie.com

Judy's comment was 'I don't want to have to pay to cook my own food!'.

What's next? Possibly a cooking class tour?
It might prove to be interesting.

“The island is saturated,” Mayor Nikos Zorzos said. “We can’t handle anymore tourists.”

Starting next year the island will cap daily cruise arrivals at 8,000, hoping to curb a flow of day travelers the mayor said is putting too much strain on infrastructure and supplies. The move has rankled cruise operators and business owners, who say such a move would choke off their economic lifeblood and that the onus is on the island to do more to accommodate the crowds."

Santorini, formed after a volcanic eruption in 1613 B.C., is one of the world’s top tourist destinations and Greece’s most popular. It draws nearly two million people a year and almost half of them are day visitors from cruise ships that stay on the island for an average of seven hours, according to cruise operators and local officials. On the busiest days in the summer, Santorini draws more than 10,000 visitors a day.

The crowds are taking a toll, Mr. Zorzos said.

“A lot of people here depend on cruisers, but something has to give,” the mayor said in an interview. “The electricity grid and water supply are at their limit. Garbage has doubled in five years. If we don’t control the crowds, it will backfire and ruin us.”

https://www.wsj.com/articles/a-greek-island-paradise-tries-to-be-a-little-less-welcoming-1535799602