Land, air, and governmental / park taxes are subject to change based on date of departure. (travcoa.com)
There can be various cities and dates of departure as well as return, so long as a portion of the trip shares the same itinerary. (squaremouth.com)
No student member shall organise any activity overseas on behalf of any club, society or other organisation registered with the Proctors, whether during term - time or vacation, without applying to the Proctors for permission before any firm commitments are entered into and in any case not less than one calendar month in advance of the proposed date of departure from the United Kingdom. (sport.ox.ac.uk)