I'm looking into getting an operation at some point, but first I have to lose a few more pounds, which I am in the process of doing.
I CAN say that being ON cpap vs. OFF cpap is already a world of difference... as unsexy as that thing is.
See if you can get used to one. The latest ones have a "soft nasal pillow" thing that doesn't cover your entire nose (thank God), look into ResMed Swift FX and any later lines.
The available operations, unfortunately, do not have a 100% success rate... except for one, which is kind of drastic (and basically separates your jaw and moves the whole thing forward and requires like a 6 month recovery).
I will also add for the other poster(s), properly treating sleep apnea is huge for overall health, and helps you feel a lot better everyday. Risk of stroke goes down and a lot of other big health impacts.
I'm actually trying to lose a bunch of weight so that I (hopefully) don't have to use a machine at all (although I have a very strong suspicion that I still had this issue back when I was very skinny, I was always a snorer and always had to take mid-afternoon naps) but mostly because I might want to get one of the operations, but they won't do one until I'm back at a "fit" weight.