I had Lap band surgery in Oct. of 2008. I am down 85 lbs and 10 lbs from goal. yeah!!! that is something I haven't been able to say in 25+ years and I have tried every diet known to man. Very very dedicated when I did try other diets. I did them all, Weight watchers, atkins, south beach, low fat, exercise, etc. I would lose some then gain back more. ugh.
This is a very personal decision, but for me I am thrilled with my choice. It isn't easy and it is a new way of living. As I sit and sip my water this morning because I am very very tight today but, was a good tightness yesterday. It is a strange thing we live with this band. I love it. I too keep pineapple juice everywhere, just in case. I have only had to use it twice and it was because I took too big a bite and didn't chew really well. It is a new way to eat.
Far as feeling better, wow!!! I never new how much energy I could have. I wake up feeling rested now, where before I woke up exhausted. I exercise now often, because I want to not because I force myself. It is amazing.
Cost, some insurances pay (my friends) some don't (mine) I paid out of pocket for it. My insurance paid for all my pre tests (except copays) but, I had to pay $17,500 and it was the best investment in my health I could have done. I have paid an additional $1000 ish for fills. I agree with previous posters who say don't go to Mexico. I really considered it. However, I found that a huge peice of long term success is the training before and follow-up after surgery. You don't get that in Mexico.
Lastly, I do have a few foods I can't eat, pasta, bread, rice and carbonated drinks. But, for the most part. slow, small bites, chew very well, lets me eat anything. Dole whips will go down just fine.

probably should still only have a few bites for weight loss concerns but, I have no doubt it would go down fine.
As for hypothyroidism, yes I do have it. I take armour thyroid and it just wasn't enough to spur weightloss. It was enough to regulate other symptoms etc. I love my band, it keeps me accountable.
Feel free to PM me for more information.
Good luck on your journey. Please remember this is a personal choice and you will be met with mixed reactions. You know what is best for you. Get lots of information.
Smile- Jo