Hi Grammy: 
I feel your desperation, i too felt that way.  I'll try to answer your questions from my standpoint. 
I think this band is a radical lifestyle change.  I believe very firmly this will work.  I believe that's the attitude you must have in any "diet" for it to work well.  What makes this different?  I can only speak for myself but having had the band surgery 5 weeks ago I think what I've found most helpful is this forum.  I also think the reality of the restriction, once you reach your "sweet" spot will absolutely decrease the amount of food you eat to 1/3 or so of what we used to take in.  Mind you it's no miracle.  You still have to make good food choices, exercise, drink water and follow a healthy plan.  I believe for me this is my last effort to lose this 80-100 pounds forever.  It does not happen overnight.  I look at this as a 1-2 year process.  I think the more informed you are and stay informed the more ift will work.  I come to this forum DAILY to keep encouraged and on the right track.  It works if you work it, not magically by itself.   
So I hope that helps.  I am sure others will add much more insightful stuff but this is what is working for me!! 
 :lb11: