You are allowed to change your destination
. The one in your declaration on exit is only your intended one. I am not sure however why this should matter.
What you are talking about is not a formal thing, it is an interpersonal thing, or, at worst, an interracial one.
We changed destination many times we never had any problem checking in or out because of that.
Some West Indies authorities are like this, others are like that, swallo this and play accordingly. Just tell them you had an engine
problem and had to stop for repairs
and then the wind
changed and you ran out of drinking water
.... ;-) And always smile!
It is irrelevant who is RIGHT because you are on THEIR island and they can do to you and your boat what they please.
Just tell the officials what they want to hear, pretend you are completely unaware of any (existing or non-existing) regulations
that can be called up. Then smile!
how to thread the fine line is one of the essential cruising skills, I think. Either you learn it or you perish.