If you're staying at a Disney World resort, you have access to free, complimentary transportation to all four parks, two water parks, and Disney's outdoor shopping center, Disney Springs, but some methods are smoother than others. The brand-new Skyliner makes it easy to zip back and forth from Epcot to Disney's Hollywood Studios, but for parks such as Disney's Animal Kingdom, you have to take the bus . . . and sometimes the buses take forever. It's tempting to splurge on Lyft rides to hop around the parks quickly, but the more eco-friendly mode is the bus. And that's not just because it's mass transit — it's because Disney buses run on a renewable diesel made from used cooking oil and nonconsumable food waste. And just think of the extra wait time as more bonding time for the fam!