Help. We purchased a OWE6 ex AKL pre April 15.

Firstly: The exchange rate of the country we are working/earning in has plummeted meaning we can't afford the trip we thought we wanted a few months ago. If we downgrade to a OWE5 continent (drop Africa) will we have to pay the OWE5 continent price now or pre April 15?

Second: Are changes still free for us to make before departure?

Third: We wanted open dated (except our leaving date) - our travel agent said we had to have dates so he could paper ticket the deal - so we've provided him a rough itinerary and he's dated the tickets. I want to be completely flexible - is our travel agent right to do this? Will this cause flexibility problems on our travels? Also he can't book more than 10 months ahead so our Itinerary dates are being squashed into the next 10 months even though our year-long journey doesn't start to November. He said he'll push the dates out as time moves along. This seems like a hassle for him - which makes it uncomfortable for us when we want to request minor additional changes to the route/dates -AAAAAAAARRRRRGH!!!!!