I had my left hip replaced. My surgeon threw out the multi page document from the hospital about not bending, crossing legs, etc. and told me that he had only two requirements:

(1) take my medicine and
(2) be a couch potato for five weeks because the only thing he can't do as a surgeon is make bones grow.

The medication was oxycodone and celecoxib. The oxy instructions were take one the first night, then continue until the pain abates and then taper off. I took one the first night because I didn't know what would happen when the anesthesia wore off. I had zero pain the next day and called the doctor and asked if I could skip the oxy. He said yes so I didn't take any more...just the first night.
A couple of days later I called again and asked if I could skip the celebrex. Again he said yes. That was a couple of years ago and I have not had any pain in that hip since.

In seeking a hip surgeon I had two requirements: (1) that the surgeon used the most current methods to avoid cutting muscles, tendons, etc. and (2) that the surgeon has done it hundreds or preferably thousands of times. Both are important but for me the second is even more important than the first. I found a surgeon who had both (Superpath and thousands of performed replacements).

Incidentally, my right knee has failed and needs replacement. I am using the same surgeon for that operation but I am impatiently waiting until I got his first available date: late September. Similar to the hip: minimally invasive subV approach.