A couple of questions more:
1) Does the 15 city limit apply to stopovers of over 24hs? Or a does a connection city count also? (this would mean only 15 flights).
2) Assuming a London-(via Frankfurt)-Asia-(transpacific)-USA-(transatlantic)-Frankfurt trip, then stopping for over 6 months (Actually going back home in South America) and finally resuming: FRA-Cairo-FRA(no stopover) - Moskow- Copenhagen(with SAS)-London, ending the RTW ticket:
Asuming less than 39K and less that 15 stops:
a) will airlines deny this because of a 6 month stopover? (they shouldn't, but...)
b) Are Cairo and Moskow valid cities after having already flown in that direction, from Frankfurt or London?