SW's are tight
As for getting to the rear speakers:
Open the hatch, on the right hand side theres a little pocket, there should be a screw in there, remove that screw.
Where about your 3rd brake light is, theres a plastic cover there, held by 2 of those little annoying pins which you must push the center of them in then pull on the other edge to get them out. remove those
then remove that whole piece (it snaps out)
then, remove the 2 side pieces of the hatch (once again, snaps out)
Then comes the big back piece, you should be able to use that pocket to pull it off and get you started.
the speakers should be exposed now, if i remember right, it takes a torx screwdriver (havnt touched them in a long time, besides that, i relocated mine)
and of corse just go backwards when putting back togeather