One tip is to get the front bolts in first and do not do them up tight until the rear bolts are in. It is quite easy to strip a thread otherwise
Also take a pic, with your phone, of the plastic bits at the rear bolts. As otherwise you will wonder which way they go when you come to re-fitting.
I find fitting the rear seats easy, I undo the centre pivot point (2x13mm bolts) with a ratched spanner and the seats up. Getting the new seats in is harder as there is little finger room to get the bolts back in. But even with my sausage fingers it did not take long.
Oh yes. Gliptone them before they go in.