Hi,
the carpets come out in 3 pieces, n/s front, o/s front and rear, I had to remove o/s front (drivers) and rear, as rear is lowest point, there was about an inch of water under rear carpet, took 2 days to dry out, de-humidifier on constantly.....
I think I unbolted seats but did not remove from car, just watch that you dont damage electrics under seat if you have heated/memory.