The affected runway is back in use during the day, although not the full length of it, so only smaller aircraft will use it. That will cause a bit of disruption as normally one runway is used for landings and the other takeoffs. Large aircraft will have to land on the takeoff runway, which will cause all sorts of hassle routing the aircraft around the taxiways. Also they have had to revert to single runway operations at night as the runway lights are out of action. So there will be quite a lot of disruption, they will cancel some short haul flights at the very least.