not difficult at all. disconnect wiring, 4 bolts to the floor, seatbelt anchor (iirc plastic cover needs to be pressed inwards and slid up) and out the seat comes.
just going off my photo; all colour coded. being airbag, it's usually recommended to disconnect battery for 30mins before working on the car, so do that, grab a brew and gather your tools. i rememebr the seat being close to the floor, so i'd go with remove front bolts, loosen the rear and tilt the seat back so you can access the connectors.
two ways to manage the seat; remove it from driver door... you'll need to lay the seat backwards then rotate 90deg so the bit where your pelvis goes, is against the B-pillar to get it out of drivers door, or possibly the easier way is to fold rear seats down and pull the seat out through the boot.
i just went with feel for the bolts. if Honda wont give you the torque, use standard torque figures (https://www.boltdepot.com/fastener-information/bolts/Metric-Recommended-Torque.aspx). I'm guessing they're m10 8.8grade.
I very likely did loctite mine using the blue stuff, but thats more down to whatever i had in the toolbox rather than specifically chosen.
Many thanks for your help, it's a shame that the seats weren't so prone to wear but I'm sure it can be sorted.