OK the flight I'm look at is showing good availability in every class. BA.com is telling me the following (nothing about minimum stay etc):
Flight: BA0015
Operated by: British Airways
Departing from: Heathrow (London) Terminal 3
Wed 25 July 2012, 21:15
Selling class: A
Changes:
Time/date changes permitted at any time before each flight departure for a change fee of £ 200 or an upgrade fee of £ 200 plus any difference in fare. Changes subject to availability. Fees apply per ticket
If you want to cancel your flight
If the booking is cancelled before your first flight, a cancellation fee of £ 200 per ticket applies
Where does it show me which fare rule applies?
I wish I understood the Fares tab in KVS