Let me start by saying, it won't give you the life you hope for- it will give you the life you WORK for.
For me, it was 100% worth it, I have zero regrets.
If you're an outpatient, I'd suggest someone stay with you for the first 24 hours. Just because if you were to have a complication, I wouldn't want young children having to be the ones who deal with it (example: death--- yeah, I know that's harsh, just making a point).
Will people guess? Probably so. If you drop that much weight that quickly, people are going talk. But it still your business, not theirs. You choose what you want people to hear from you.