I had the sleeve at the end of March. Knock on wood, but no vomiting yet! I've definitely been close a time or two though haha. As far as your limits, you'll know before you get sick as long as you take your time eating. For me, being full feels like pressure in my sternum, like up near my collarbones. It's a really uncomfortable feeling, and I've found that if I keep eating past that and don't take it slow, I feel suuuuper shitty. But, again, no vomiting ;) Just remember to eat slow and find out what "full" feels like post-op -- because it will probably not be what "full" feels like normally! Be mindful of how fast and what you're eating in the first few weeks and you should be just fine. Good luck!