Doing my first booking pretty soon with AA's RTW line, hoping to get a couple of answers before we take the plunge.

1. If we book the first flight nearly a year out, is it free to change the dates of the subsequent flights if we plan for the trip to take place over the course of the subsequent 8 months?
2. What happens if some flight routes are only operated seasonally, and so you can't put in dummy dates yet?
3. Can you open date some flights to avoid this problem?

The route is likely to be OSL-DOH-MEL//SYD-AKL-JFK-LAX-DFW-JFK-LIR-JFK-DOH-NBO-MAD-TOS

MAD-TOS and JFK-LIR are both seasonal (both being winter routes), but I appreciate AKL-JFK is super in demand so needs to be snapped up in D quite early on, so trying to figure out how to square this circle