I work for a travel website. Several major airlines have enacted a "Flex Policy" for any flights going into, out of, or connecting through San Diego, Los Angeles, Santa Ana, Ontario, Burbank and Palm Springs. Basically, this means that they are waiving their normal exchange fees if you choose to delay your trip for as many as 7 days. I called to inquire about our flights, On both American and Continental, and was told they would waive the exchange fees if we chose to leave the following Friday. We are currently scheduled to leave on the 2nd of November. For those flying into the area, this may be an option you could look into if you are very concerned.
I did call Disney guest services to see what they are reccomending to guests and what the conditions were like. I was told that they are not experiencing any ash or smoke in the air, but the smell of fire is evident. Since we are lucky and have a week to think about it we plan at this time to go as scheduled. After so much anticipation, I just don't think I could bear to wait another week to go. When you look at having to change our vacation time at work, shuttles from the airport, hotel reservations, dinner reservations, and flight bookings, plus having to wait another week, we'd rather deal with the smoke and have a quiet week in the park.