Had to remove all three food drawers and the back panel behind the drawers (4 screws). The water tank comes with the associated tubing which would typically require access to the back of the fridge to run the new lines.
Instead I clipped the existing lines inside the fridge. Then I clipped the lines off the new tank so they would line up with the old lines.
I then used a 5/16" OD compression coupling (Lowes or Home Depot) to connect the ends of the tubing together. The joined tubes are hidden behind the panel and are water and pressure tight.
This was MUCH easier than pulling the fridge and rerunning 10ft of tubing.