IN CANADA is the concept some seem to have trouble grasping. Canada has no authority to enforce it's laws on Dominican soil.
I don't know Canadian Law, but like variations in US State laws I am willing to wager there are some things you can do legally in Newfoundland that would be illegal in Quebec
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The Canadian Criminal Code is a federal law and applies to all canadian provinces except:
Application to territories
8. (1) The provisions of this Act apply throughout Canada except
(a) in Yukon, in so far as they are inconsistent with the Yukon Act;
(b) in the Northwest Territories, in so far as they are inconsistent with the Northwest Territories Act; and
(c) in Nunavut, in so far as they are inconsistent with the Nunavut Act.
As for offences committed outside Canada:
Offences outside Canada
(2) Subject to this Act or any other Act of Parliament, no person shall be convicted or discharged under section 730 of an offence committed outside Canada.
Of course there are a lot of exceptions:
Terrorism offence committed outside Canada
(3.74) Notwithstanding anything in this Act or any other Act, every one who commits an act or omission outside Canada that, if committed in Canada, would be a terrorism offence, other than an offence under section 83.02 or an offence referred to in paragraph (a) of the definition ?terrorist activity? in subsection 83.01(1), is deemed to have committed that act or omission in Canada if the person
(a) is a Canadian citizen;
(b) is not a citizen of any state and ordinarily resides in Canada; or
(c) is a permanent resident within the meaning of subsection 2(1) of the Immigration and Refugee Protection Act and is, after the commission of the act or omission, present in Canada.