Several of us on the BB have had myectomies done by different doctors and not all of them will be exactly alike. Mine was an outpatient procedure, but I was kept in "extended observation" overnight. Some patients are sent home or to hotels instead. Recovery will vary with the individual - and "recovery" can mean different things to different people. It only took a few weeks for most of the swelling and bruising to go away. I drove 10 days or so after the surgery. The doctors will tell you that it can take 6 months to a year to completely heal - particularly for the forehead numbness. Some still need botox and others are okay without it. I had an upper lid myectomy and have had to have botox in the lower lids since the surgery.
I posted a link below to an abstract from a 1999 BEBRF conference presentation by Dr. Anderson, who does a lot of myectomies (and a lot of presentations). It will explain how he does a myectomy. You can also contact the BEBRF about borrowing a video of a myectomy being performed. There is no charge except for postage to return it. Hope this helps some. You can also do a search on "myectomy" on the BB and read some of the other posts that have been made on the subject.
Botox can sometimes be given to relieve Meige symptoms in the lower face. I don't think this is usually addressed surgically.
Virginia in AL
Related link: http://www.blepharospasm.org/99anders.html