Personally I don't think Wizz are looking at gas and oil personnel more like Norwegians coming to London for shopping etc and UK citizens to visit Bergen and the fjords (I do near they are pining for them!). Regards Porto it has a large catchment area with the Spanish cities of Vigo, Ourense and Pontevedra not to far away as well as Braga in Portugal but we will just have to wait and see.