Disney in the coming months plans to begin introducing a vacation management system called MyMagic+ that will drastically change the way Disney World visitors — some 30 million people a year — do just about everything.

The initiative is part of a broader effort, estimated by analysts to cost between $800 million and $1 billion, to make visiting Disney parks less daunting and more amenable to modern consumer behavior. Disney is betting that happier guests will spend more money.

“If we can enhance the experience, more people will spend more of their leisure time with us,” said Thomas O. Staggs, chairman of Disney Parks and Resorts.