You can remove the blower from under the dash on the passenger side, same procedure as replacing the cabin air filter, just a few more Torx screws.
HINT: It helps to have an Albanian dwarf that can get in there and do this for you.
As to the drains, yes, remove the wiper arms, cut the 2 wire ties, slip down the 2 O2 sensor wire clamps, remove the Torx screws.
Lift it up slightly on the passenger side and unplug the nozzle heater plug, you can then rotate the cover out of the way.