So AA canceled my first flight so my itin starts a day later. So here's my question:

I was going to be out of North America 10 days before returning. The canceled flight lowers this to 9 days. The EXP desk said there would be no problem but I get this nagging feeling there will be trouble ahead.

If I end up breaking the RTW rules due to a canceled flight and the airline cannot reroute me the same day can\will I be forced to wait an extra day before returning to North America?

any advice would be appreciated.