Hi Trish,
I, too, have heard conflicting information on whether or not the classic Dole Whip is
entirely dairy-free, so my very best advice to you is to contact Special Diets directly, at specialdiets@disneyworld.com or by phone at 407-824-5967.
Walt Disney World strives to accommodate guests with special diets, and if you plan to dine at table-service locations, request a Guest Allergy/Dietary form prior to arrival in addition to notating your Advanced Dining Reservation. When you contact them about the Dole Whip, request the form at that time. I'm also sharing a link with you to read more about guest accommodations with
Special Diets.
At both table and counter service locations, I've always experienced a friendly Cast Member or Chef willing to answer any questions I have about the menu due to my allergies. I was even able to rotate through the many stands at Epcot's Food & Wine Festival with ease, knowing a chef was on hand to assure me of the ingredients at each and every food stand. I feel confident your experience at Walt Disney World will be no different.
Have a MAGICAL vacation, Trish!
Sherri