Hi, Angie!
Not to worry!
My first trip EVER to Walt Disney World was with my 3-year-old and 6 month old. You can do this!
In addition, I'm a teacher, so our visits to WDW are usually during the crowded, hot summer months, but this, too, can be done well...with a little extra planning. (No worries! You can do this!)
First, look at
Little Ones at Disney Theme Parks, which includes many fantastic tips.
Take advantage of the Baby Care Center at Magic Kingdom, located near bathrooms and First Aid, next to The Crystal Palace. You'll find a room with changing tables (plural form!), an eating area with high chairs as well as older sibling-sized chairs and tables, family-friendly Disney shows on TV and a Nursing Mothers room. Wow.
Begin at park open when it is cooler; heat-related thunderstorms roll in later in the day. Table Service meal? Book for 2 or 3 p.m.; everyone will be ready to sit down in air conditioning, get off their feet for an hour by that time. You'll feel refreshed and ready to enjoy more park time once you are finished.
Let the 3-year-old arrive in a bathing suit / rashguard top and pool shoes, then spend time at
Casey Jr. Splash 'N' Soak Station. (Bring a head-to-toe change of clothes for the ride home.) Visit by 10 a.m. and revisit often.Visit air conditioned rides at least every other ride; bring wide-mouthed, refillable, sealable bottles for ice/water PER PERSON in your group, refilling at meals. Bring a water spraying fan or purchase one in the park. Keep BOTH kids in strollers with sunshades and enjoy a popsicle between meals.
Send more questions as you think of them, Angie! I'd love to help you all stay cool this July in WDW!