Your lip should be feeling really sore for about a week or so, after that is a breeze as long as you take good care of it. Make sure to use mouthwash often and don't play with it/touch it. Some ice should help the swelling go down a bit too for the first week.
I've had 3 before, now i only have one unfortunately (job issues) but i never really had any major problems eating...i just stayed clear from super greasy food for the first 3 days until the swelling went down and cleaned it thoroughly. Piece of cake.