Originally Posted by
freecia
No, LA to SF cruise by non-American cruise line won't be allowed. You could be fined heavily if you decided to "self disembark" at SF as a final destination.
There are "cruise to nowhere" or "weekend getaway" itineraries which don't have any land days. Princess has one on May 15 from SF to YVR. I think NCL runs a few from NY occasionally. Disney Wonder has one from San Diego on May 15.
Incorrect.
US rules which some refer to as cabotage, prohibit the foreign operator from selling domestic transport. They do not prohibit the passenger from disembarking. Thus, if you purchase Los Angeles - Vancouver with a stop in San Francisco and choose to disembark at San Francisco, you have done nothing wrong and nobody can or will stop you.
You simply will have paid for a longer and presumably more expensive cruise than you took.