Yeah, people are just parking in a long line along the side of the road. I'm definitely expecting it to be a bit chaotic and we'll almost certainly have to walk a few extra km down the road to the start of the marked trail. But I don't care, it's already a much shorter hike than many people did at the weekend when official advice was to park at the Blue Lagoon! The marked trail itself is 3.5 km, so not a crazy long hike at all.
Some idiots have been driving off-road and yes it is illegal and people have been fined.