Hello Shannon!
A November trip sounds absolutely lovely. The holidays are a great time to visit Walt Disney World Resort as the festive decorations really make the parks come alive.
If you're trip dates are flexible and if dining reservations make or break your trip, then yes, I'd probably reschedule. Personally though, I would keep my dates and go anyway. In fact, I'm planning my own holiday-time trip and I've only planned one Advanced Dining Reservation. If you keep your scheduled trip, I recommend checking back often as your dates grow closer. You'll also be amazed at what can open up just a day or two ahead and even what luck you may find day of or with walk-ups. Also, if you aren't able to schedule your desired reservations, you could spend the money on a
dining event, dessert party or try a few extra Quick-Service locations you may not otherwise visit. My opinion is that Disney Dining is delicious no matter the location, so I wouldn't let that deter me from a magical adventure.
Happy planning, Shannon, and please let us know if there is anything else we are able to assist you with,
Pixie Dust,
Lauren