Does someone know if I
1. can I do open jaws on a one world award?
2. the rule says that one can stop only once in a city and may not connect more than twice in the same city. does this means 1 stop and 2 connection or 1 stop and one connection?
3. I am planing to use 50K mile award, of course I cannot paln the exact dates. Can I change the dates, and if so cost?
4. Can I change routing after starting the trip and if yes. cost?

thanks