Hi, Beth. Welcome to planDisney.
I love that you're thinking creatively about how to get to the parks. Walking over from a Good Neighbor hotel and catching a Minnie Van sounds like a charming start to the day. Minnie Vans are such a delightful way to travel, especially with their cheerful polka dots and friendly Cast Member drivers. And, of course, you're going to want to take advantage of
Early Theme Park Entry.
That said,
Minnie Vans only operate during the official operating hours of
Disney Springs or the Walt Disney World Resort theme parks. Since the pickup areas are located within Disney Springs (not outside of it), you won't be able to request a Minnie Van there before Disney Springs opens for the day. If you're hoping to head out early, you'll want to look into other transportation options like a regular Lyft, Uber, or taxi to get to the parks before opening time.
If you're eager to use the Minni Van service, you can book it later in the day for your return trip or to hop between parks. That way, you still get to experience the fun of a Minnie Van without being limited by opening hours.
Adventure it out there, Beth. Happy planning!
Mike