Hello, Bridget,
My goodness, your trip is nearly here! It sounds absolutely magical to be traveling with both your children and grandchildren. You'll be making so many incredible memories.
Fantasyland is currently undergoing renovations, but essentially all of the attractions are currently open: Mickey's Philharmagic, It's a Small World, Mad Tea Party, The Many Adventures of Winnie the Pooh (make sure to touch the honey walls in the queue!), Peter Pan's Flight, and Snow White's Scary Adventures.
In addition, the
New Fantasyland has begun opening a portion of the area to guests: The Barnstormer, Dumbo the Flying Elephant (make sure to see it at night!), and a new stop for the Walt Disney World Railroad at Fantasyland.
Except for Barnstormer which has a 35" height requirement, the rest of the attractions are available for everyone to enjoy.
Have a wonderful trip; please let us know if we can help again. We are happy to do so!