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;4.95;5.30;4.94;3.33; Spaniards;3.86;4.13;3.77;3.26; Foreigners;7.07;7.19;7.34;3.62; Notes: Source: National Statistics Institute