As for rear seat, removal is easy.
Its the re installation that is a bit challenging.

Simply; pull up on the back seat right at forward side of the seat behind driver and passenger seats. So, two sides of the seat, and pull up. This will disconnect the seat from the clips. At this time move seat forward and off the body (bench)

Once you have the seat out of the way the other thing you will not like dealing with is the carpet and the padding underneath.
What I did with my carpeting is cut it. As in I cut a straight line in the carpet on the outsides of both of the pump assemblies.
This allowed me to roll the carpet forward and work on the pump and top of fuel tank easily.