Years out and one baby later, my excess skin has nearly disappeared. I'm REALLY glad I didn't have a tummy tuck. I think the weight loss from Roux y Y gastric bypass is so, so rapid that it takes the skin a while to catch up. I also think exercising helped tremendously, although I didn't start exercising until the rapid weight loss slowed down. I had lost most of my excess weight within 9 months, especially once I started running!
I was in my late twenties. My mom (also post op) was in her 50s and she actually has no loose skin at all. We both started out close to 300 and I was at a little under 150 when I became pregnant. After pregnancy, I settled around 150 again until this year. My mom is about 135 lbs.
I am happy that I had gastric bypass and not the band, but am glad that the band is working for you.
Just thought I would chime in as a post-post op. Good luck to all of you!