Any frequent visitor to Lanzarote will be familiar with Arrecife's airport's stringent weight rules on the way home. 20Kg is 20Kg and any over they look for €8/kg in excess. Just heard from a friend today who's just back & didn't think he was over but got hit for €90 ( they wanted €120 but he only had €90 left ) in excess. Given that this represents some 15Kg or 75% overrun on his case, he's been worried since that maybe there was something wrong. I've taken the policy of always weighing cases on an unused check in before joining the ordinary queue and have found a few Kg of a difference at times on the scales. I'd recommend anyone heading there to do same on way home just so you don't get any nasty surprises when you get to top of queue.