Bar Harbor residents voted Tuesday to place tighter regulations on the cruise ship industry after years of complaints about overcrowding in the tourist mecca.
Voters passed a petition restricting the number of cruise ship passengers who can come ashore on any given day. The town will now allow no more than 1,000 people per day to disembark from cruise ships, though questions remain about enforcement.
https://www.bangordailynews.com/2022/11/09/news/hancock/bar-harbor-cruise-ships-electi
The flaw in your argument is that you are comparing domestic interstate travel with international travel. Once you have boarded a foreign flag cruise ship, this is no longer domestic travel.
And, if you read down the link you posted, it notes that Crandall v Nevada does not guarantee the right to a particular mode of transportation, when transiting between states.