Hi Marina,
How awesome that you are able to experience a
Walt Disney World vacation before your sons turn 3! I certainly understand your concern about them being mistaken for older children, but there's no need to worry. My younger daughter was always tall for her age, too, but never in many visits before she turned 3 were we asked for proof of her birth date. I even had a small, credit-card-sized copy of her birth certificate that I carried just in case, but didn't need.
As soon as she turned 3, she got her own annual pass!
Even at almost 3, your sons will be able to enjoy so many of the rides and attractions at the theme parks. This
guide to visiting with preschoolers has a full list of attractions that are accessible to all ages and contains tips to help make your vacation enjoyable for everyone.
Thanks for stopping by the Disney Parks Moms Panel, Marina. Please come back again if you have other questions about planning your vacation. Enjoy your time with your family!
Wilma