1) No, I kept the majority of the weight I lost off. I think I gained about a fourth of what I lost in total. The first 3 or 4 days after the unfill, I gained 17 lbs of just Water alone. Bleh. My average calories was similar to what it's been it's for 7 years (~1200 to 1500 calories). I was told this was normal due to being malnourished and dehydrated by having a too tight band for too long.
2) I had the band removal to sleeve in one step surgery. I was still in onederland when they suggested that I get a revision. They unfilled me that day. I remained unfilled for several months to let my esophagus and stomach rest before the surgery, which was done as an outpatient. (Easy recovery, btw)
3) Not much lost during 3 weeks pre-op, for the same reason I gained some of my weight back. My body was still adjusting and hung onto everything. Even on 800 cal pre-op, my body wouldn't budge! grrrr
4) 11 weeks post op revision: 36 lbs. lost