There are some specific requirements, which vary from province to province.For instance, in Ontario, both spouses must be at least 16 years old, cannot be close relatives, cannot be already married, and have to be physically present at the time of applying for a marriage license. Each spouse...
The only way to reach such places is to find a cargo ship or a helicopter (usually, after you obtain the necessary permits) and hope they would agree to let you on board. Or, if your only choice is to join a science expedition, again, after you get your permits, you have to ...