Looking in from the Outside, i have no skin in the game or really care.
But there many factors when it comes to the fuel thing.
Transport Canada rules, There is nothing illegal about the practice because individuals are allowed to transport up to six jerrycans under an exemption in Transport Canada's transportation of dangerous goods regulations. Up to 150 KG.
Personal vehicle / recreational vehicle Under Section 1.15 of the TDG Regulations, there is an exemption that will allow you to transport a "gross mass" of up to 150 kg of propane.
After that you need the Dangerous Good Placards and the endorsement that you have taken the course.
Then there is the storage rules, berms to prevent spills, fire extinguishers, spill containment, ( absorbent materials,) open flame near by. Then the NCC ( National Capital Commission) has their own rules for use of the lands under their control. Environmental concerns what if there is a spill and it reaches the Rideau Canal, the Ottawa river, or the sewer system. Who is going to want to be responsible if the Rideau Canal has a fuel spill into . World Heritage Site and be great to see it on the news being dug up and damaged . Very costly clean up, and no insurance to cover such a spill. Ask anyone who has their oil tank leak in the basement of back yard. House have torn down because it was cheaper to clean up that way. I know 5 gallons is not a lot of fuel, but when you see the amount of fuel being bought to the site, it is 1000s of gallons, or liters. Then throw in the burn barrels, fireworks, and the smoking, and the lack of safety controls.
Oka
I remember watching it on TV and thinking how bad it looked to see Canadian troops with weapons and ammo standing in front and between fellow Canadians. It is beyond my mind how no one got hurt or killed. Well trained troops can take some of the credit, some credit can be taken by the officers leading them, and the protestors can take some of the credit too. But the image is not something we as Canadians really want to see, if it went nice and smooth, no one hurt, no one killed, it would be great victory for the Army. But the negative press it would feed would show the world we are no different than the US and their race and law enforcement riots, show us no better than a 3rd world nation putting down a protest with tanks and machine guns. ( Yes I know the difference between a tank , a LAV, M113, and Tapv.) but the average person sees a weapon in the hands of a soldier and it is a machine gun they see, and everything the army drives is a tank.
I was at Ipperwash in the final summer they held a cadet camp there, I saw the police and the protestors inactions live and in person. No matter what happened the uniform side was in the wrong, because that is how the media reported it. Was told we could be taken hostage soon as the cadets left camp so we were all given leave to get off camp asap and to report back to our units or normal army jobs. We were not to stop any where locally, just get out of the area, and no talking to reporters.
Biggest problem is even the army does not have the heavy wrecker fleet to pull this many trucks off the street.
The image of armed troops on the Hill , will feed all the nations with human rights issues Canada speaks out against ammo to tell us to mind our business because we used the army to put down a protest just like they do.
Tough call for the army to figure this out if called upon.