If you can afford a private physio, get a pre op appointment now. You can learn all the appropriate exercises and practice them while you're still mobile so you don't have to cope with new stuff after the op
V shaped pillow is good for sleeping on your back. If you really really can't sleep on your back then the physio can show you how to use it to support your top leg when sleeping on your side - I wouldn't be trying to do this immediately though.
Get a shewee or similar and practice using it. You won't want to be getting up and down every time you need the loo, especially if your raised toilet seat doesn't have arms. If you often get up in the night for a pee, consider getting something you can use perched on the edge of the bed. I found a wide necked fabric softener bottle worked fine.
Get risers under key pieces of furniture so you can sit down easily. If you have any of the old fashioned plastic garden furniture with arms that works very well. It also works in the shower so you don't have to balance precariously. Get a long handled shower brush so you can reach everything without bending or twisting.
Get a rucksack, capacious cross body bag or fisherman's vest with loads of pockets so you can carry a folding grabber, phone and other essentials.
You will need both hands to get up and down stairs so consider how you're going to get other things up and down. I tied an IKEA bag to a rope and hung it from the top banister.
The one thing I couldn't solve was socks. I ended up living in fleecy clogs for a few weeks.
Good luck, the relief is instant. You get 6 weeks of awkwardness afterwards but that's it, all fixed.