I had my 2nd FESS on Jan 18. I was under general anesthesia both times. Both times I had minimal pain and only ended up taking the pain meds for the first day or 2. I stuck with regular Tylenol after that.
The packing is annoying and so are the splints if you end up having a septoplasty. I had my surgery on a Friday and went back to work and doubled on Tuesday. Everyone has a different experience though.
The 1st surgery I had, I had no packing or splints, this last go around was a much more major surgery (septoplasty, turbinate reduction, ethmoidectomy, frontal sinusotomy). It did take about a month to feel completely back to normal as far as energy and whatnot, but keep in mind that I was back to work full time as well.
The good news is that after my surgeries I feel so much better, and I think that's true across the board.