The liquid adhesive remover provided in your kit can damage the antireflective coating on your MacBook Pro's display, as well as the plastic keyboard keys.

To protect your display, place a sheet of aluminum foil between the display and keyboard and leave it there while you work.

Additionally, use painter's tape to seal off the area under the trackpad as best you can. Optionally, you may also layer an absorbent towel directly underneath the trackpad area to soak up any excess adhesive remover.