(valid 4 weeks after 1st booking)
(valid 2 months after 1st booking)
(valid 3 months after 1st booking)
(valid 4 months after 1st booking)
(valid 6 months after 1st booking; shareable among 2 pax)
(valid 9 months after 1st booking; shareable among 4 pax)
(valid 11 months after 1st booking; shareable among 5 pax)