Campsite Occupancy Survey National Data by categories. Demand Average stay of the travellers by residence and category. Units: Average stay ,Total,Luxury and cat. 1,cat. 2,cat. 3, Total,4.98,5.26,4.92,3.95, Spaniards,3.87,4.07,3.76,3.54, Foreigners,7.12,7.21,7.29,5.24, Notes: Source: National Statistics Institute