Is 7,700 acres as big as Disney World?
It's about three-tenths as big as Disney World

The size of Disney World is about 25,000 acres.
(a.k.a. Walk Disney World Resort, a.k.a. Walt Disney World, a.k.a. WDW) (Lake Buena Vista and Bay Lake, Florida) (total site)
Disney World currently occupies 25,000 acres. Part of the former total area of 29,700 acres now comprises the Disney planned community of Celebration, Florida.
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