Hi Amanda,
Thanks so much for sending your question to us here on the Disney Parks Moms Panel!
Cape May Cafe is an awesome choice for breakfast! I can't think of a much better way to start your day than dining with Goofy and his pals.
I have good news! Complimentary bus transportation will be available to get you from Disney's Pop Century Resort to Disney's Beach Club Resort for your breakfast reservation. You don't say what time you'll be dining, but "breakfast buses" (as they're unofficially called) often run as early as 6:30 a.m. and regular bus transportation starts an hour before the parks open, so you should be covered either way. Just check with a Cast Member at your hotel to confirm when and where you should catch the right bus for your breakfast reservation.
In terms of the route, here's what I'd recommend: Take a bus to Disney's Hollywood Studios, then catch the boat to Disney's Beach Club Resort. When you arrive at Disney's Hollywood Studios, you'll find the boat launch outside the gates and just a short walk away (just ask a Cast Member for directions if you need to be pointed in the right direction). I'd recommend allowing yourself 60-90 minutes for travel time from your resort Cape May Cafe if you're using Disney transportation. Of course, another option that would save you time (and give you a few more minutes of sleep that morning) would be to take a cab directly from your hotel to the restaurant.
I hope that helps and wishing you a most magical vacation, Amanda! Please let us know if we can help answer any other questions as you make your plans.
Beth