Few days to few wks. Recovery from nissen fundoplicatoin can be from a few days if done minimally-invasively with laparoscopy, or can take a few weeks if done with open laparotomy approach.
Days-to-weeks. Following a laparoscopic fundoplication, there is minimal incisional pain which can be managed as an outpatient within a few days after surgery. However, there is often swelling around the "wrap" that may make eating a normal diet quite difficult for weeks.