KARACHI Emirates Airline has launched its summer bonanza offer Summer Smiles in Dubai offering families with children under 12 years an incredible offer while they visit Dubai this summer, says a press release. Passengers who book a three-night package with select hotels in Dubai between 14th May and 30th September 2011 can have up to two children under the age of 12 years to fly at 50pc off the adult fare while their stay, meals and play in Dubai is absolutely free when travelling with two paying adults. The Summer Smiles in Dubai package comprises a three-night stay for two adults and two children including the visa cost for the children. The visa costs for the two adults are not part of the package.