I had this done. It didn't help but then it was completely the wrong surgery for my problem, that's a different and much more ranty thread altogether though!
The surgery itself was fine. They give you good pain relief during and after the surgery, and to take home as well so that side of it was fine. I was sore for a while but nothing unbearable. I did get an infection but a course of antibiotics cleared that right up.
Make sure you have a few straws in the house on the day you have surgery. I had none and I couldn't drink anything without soaking the whopping great bandage on my nose in my drink. It is surprisingly hard to get hold of a packet of straws in the arse end of North Wales at 4pm on a Friday.
The saline rinses were hard for the first few days while things were swollen and full of gunk from the surgery but after that it was ok. They gave me some 'official' sachets to use at first and told me how to make up more of the solution myself, but I ended up buying more of the official ones from Boots because I found the home made solution a bit harsh.
The hardest for me was the general anaesthetic. This may very well not be an issue for you though, I have a long and interesting history of responding to anaesthetics funnily. I wake up from them really, really quickly and am fully coherent before they've even wheeled me back to the ward, but am then wiped out and feeble like a newborn kitten for up to two weeks after. Probably just me though, so don't worry about that. It wasn't a long anaesthetic at all, I left the ward to go to theatre at 9.30 and I was back there at 10.20.