There are lots of different surgeries, depending on whether you have a hiatal hernia that has to be closed, if the esophagus needs to be "taken down," how old you are and what shape you're in. then there's the individual doctor's orders! You'll probably be told when you leave the hospital. If not, ask then!
A lot of people go back to work in a few days, but some of us needed to be home in bed longer than that.
As for lifting, don't! Wait for at least 3 months before you lift anything remotely heavy!! You don't want to rip out the internal stitches and have to go through this all over again.