After having two kids back to back my stomach was destroyed. I got it done July 17th, and I could tell the difference immediately. There is still a lot of swelling which is completely natural, I still can't walk completely straight which is also natural. I would say to take off a good 3 weeks from work just to be safe, I was about to only take two, but it is not enough time to recoup.
The most painful part are the tubes, Dr G took them out yesterday so I only had them 9 days, but everyone is different. So worth it!