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,4.90,5.13,4.86,4.05, Spaniards,3.86,4.01,3.76,3.68, Foreigners,6.98,7.07,7.16,5.17, Notes: Source: National Statistics Institute