If you still have your tonsils then there is a greater chance of the surgery being successful, as there is more tissue that can be easily removed. The pain is similar to a tonsillectomy, but covers a wider area of the throat. They remove pieces of the soft pallet, uvula, back of your throat and tonsils. I had this+a tonsillectomy done at the same time and the results were night and day. I was working again after a week and a half(I have a very physical job, desk job you could be back sooner) Back in the gym after 3 weeks I'd say.
You can't eat solid foods for the first week or two after, depending on how extensive your surgery is the time will vary. I lost a fair amount of weight...nothing that a little test couldn't fix though. The painkillers made a night and day difference, I was doubling up on them though.
I can now run on 6 hours of sleep and feel better than I used to from 8 hours of sleep, my snoring is significantly better. My girlfriend back then wouldn't stay the night with me because I snored so loud she couldn't sleep. Now I'm told I barely snore. If you can afford the time off for proper recovery, and your insurance will cover the surgery I'd reccomend atleast trying it.
The recovery time would probably be shorter if you don't have a tonsillectomy done at the same time...My tonsils were huge and left very big holes for a long time. The only odd thing is for a month or so after the surgery when you swallow it feels kind of weird, but you get over that quickly.