I got into the MPC to see about how the parts are put together.
There is not a drain like a hose or a channel. It appears the liquid goes over an edge and drops down. Maybe to the fender.
I was going to suggest removing one fender.
You will need to support the hood as the hinge bolts to the fender on most models.
The front is where most of the labor will be. Headlights and radiator grille
Yeah, job creep it is real. And hard to resist, IMO.
I might be inclined to remove a fender. Do as best as possible. Take pictures of other work needed. Then reassemble.
However those leaves and debris would not sit well with me.
I have considered that on my Mark III for a different reason. I did remove the hood hinge & support with out removing the hood. However, being a Lincoln, there are far more parts to deal with than what is on a Fairlane in removing the fender.