Yes all of the camps have got working wifi. In El Puerto de Santa Maria due to the modern facilities the wifi works perfectly and there is a computer room which staff can use. However in some of the other rural camps in the mountains the wifi is not as strong at at times the coverage may be reduced and so staff might need to go to a nearby café to use their wifi. Also, if you have a data plan from a country within the EU, you will be able to use your data as if you are at home!