Brake cooling is all there in the Boeing Qrh, and it depends on all the usual variables as well as what Autobrake setting you use and whether or not you choose to use full reverse.
Our policy is Autobrake 1( or 2) and idle reverse only unless there is an obvious reason why. I flew into Taba the other day on a -700, temp 38c, Qnh 1007,2400 ft elevation and a full aircraft (148 plus 6 crew and return catering). No problem with the brakes at all. These are pretty equivalent figures to US operators in the Desert in Summer.