Planning to get my RTW changed this week - some more questions (note I have already flown my first segment)

1 - I was ending in CAI but based on above response I am assuming DOH will be ok ?

2 - I am doing route changes as well as date changes and going from 13 segments to 15 - will it just be $125 change fee plus taxes or will there be any form of fare adjustment as well ?

Thanks