This is a very family friendly trail however be alert of the many tree roots covering the grounds, to avoid tripping. Allow at least 45-60 minutes of continuous hiking each way get to Hays Falls. You will have the choice to view the falls from above or from below The trail very well maintained and is marked with blue and white trailer makers so not much chance of getting lost.
However If you didn't turn towards the falls and heading the other direction, the trail will lead you to a tunnel under the Trans Canada Highway. I do not recommend going further but to turn around and head back onto the trail as this tunnel is the entrance to total wilderness without trail makers and cell phone reception comes and goes.