that's technically very true but the chances of them ever knowing if u happened to go out province to another province would almost be impossible for them to trace.
Not completely true though!!
Should you take sick, you will have to make a claim against your own provincial (Medicare) insurance at one point (unless you choose to bite the bullet). They then ask all the pertinent questions. Even if you have another outside (private perhaps) insurance, the first payer is
always your Medicare, the outside insurance only pays the difference and they will often claim on your behalf from Medicare. (The actual procedure can vary from insurance company to insurance company as to who will claim from Medicare - mine does it on my behalf). Either way, count on LOTS of paperwork.
If you don't make any claim then the point is moot. Apart from ordering more than 3 months of medication (which is coded differently at least here in Que (RAMQ) from the usual 1-2-3 month order .), it would be, as you say, difficult for them to know.
Been there, done that!!
(I see "buchanan", you have learned a great deal about the F8840 and associated rules in the last few days!!
GOOD SHOW 
(but several of the posts you responded to above on the subject were from 2011!!) Been there, done that too!!!! heh heh