Hello, Cintia! Welcome to the Disney Parks Moms Panel.
To receive the free Disney Dining Plan for this fall, each individual in your party must have a minimum of two days worth of Theme Park tickets and those tickets must have either the Park Hopper Option or the Water Park Fun & More Option. If you downgraded your tickets to a base ticket, you would no longer be able to enjoy the free Disney Dining Plan. I highly recommend keeping your current package, as the value of the Disney Dining Plan is greater than the additional cost of the Park Hopper option.
I personally enjoy the freedom the Park Hopper option allows, as you can enjoy multiple Theme Parks in one day. You could start the morning off at Magic Kingdom Park and then enjoy IllumiNations: Reflections of Earth to end your day. Or, if you are at Disney's Hollywood Studios and you are in the mood for barbecue, 'hop' on over to Disney's Animal Kingdom Theme Park for a bite to eat at Flame Tree Barbecue.
If you think the Water Park Fun & More Option may be a better option for your family than the Park Hopper Option, you may call (407)939-5277 and inquire if you are able to change your Theme Park tickets.
Wishing you and your family a magical vacation, Cintia!
~Rachel