My oldest mare had two molars extracted last year. I recognize that's a different kind of procedure than you're doing, but I would guess there are some similarities. She did get a little bit of bute for a couple of days, but really didn't show much evidence of pain (and she's not a particularly stoic horse). There were some oral antibiotics given for awhile, I can't remember exactly how long. I can't imagine any reason to keep them stalled aside from waking up from sedation (we were at a vet clinic for surgery so that was prior to coming home). I expected her to have restrictions on what she could eat, but she really didn't. I was told to offer her hay or grass if she wanted it, and supplement liberally with soaked cubes if she preferred that, and soak her ration balancer really well (which I always do anyway as she's had a history of choke in the past). Because of the extraction, I had a couple of days where I was supposed to flush her mouth with plain water using a large syringe to keep stuff from packing in the sockets- but the teeth had been cracked and infected for so long, the sockets were actually able to stay much cleaner with those damaged teeth gone than they had been before. I was supposed to watch for excessive blood dripping (never saw any) and smell her mouth regularly to identify "off" odors developing (didn't have any). She chewed a little funny for a couple of days, and every now and then I can tell she gets a wad of something caught in there and actively rinses out her mouth, but that was pretty much it for her experience. It was surprisingly easy to recover from, and I had been really worried it would be a huge deal.
Hope all goes easily for you!