I had one done in November, other one due next Monday.
The op was very quick, didn't hurt at all. Eye felt sore afterwards as if I'd been punched - not very hard - in the eye, but this went off within a day or so.
Vision was blurry to begin with, then went very misty after about 4 hours - I totally panicked and rang the emergency line! Evidently due to swelling of the cornea (common - though I was given no warning it could happen). The mistiness cleared after another couple of hours as the swelling subsided, though I was told it can take a day or two. The eye was a bit uncomfortable for a couple of weeks as if I had a speck of dirt in it. I'd worn contacts for years and am used to things in my eyes, so maybe there would be a bit more discomfort if you've never been a contact lens wearer.
Take sunglasses with you - daylight is painfully bright for a day or two after.
So far my eye has been excellent, though quite often for some people the vision can go misty after a few weeks (I've talked to a couple of friends who've had this), which is sorted by a 5 minute painless treatment.
You are not supposed to bend over for long periods for a couple of weeks after, eg. do gardening, or do any very heavy lifting while it is healing. There are also eye drops to take for at least a couple of weeks. I think the aftercare varies on your personal medical history.
After a month or so there is a follow up appointment to check if everything is OK.