◾type of trip:
◾visits with family and friends (single-solo)
◾city and shopping trips as well as cruises and beach holidays (collective-solo)
◾sightseeing tours (single-group)
◾events and sports vacations (collective-group)
◾The two categories of solo travellers who travel in groups (collective and single) look for travel information from friends and family as well as promotional materials from tour operators