There is some precedent for the use of the DS in the theme parks:
Beginning May 22 with the release of the video game, Disney park guests who bring their Nintendo DS and a copy of the Pirates of the Caribbean: At Worlds End DS video game with them during their visit can download new video game content at specific X-marks-the-spot" hotspots hidden near the Pirates of the Caribbean attractions. This download unlocks new content such as unlimited health and savvy" as well as fun extras, including additional costumes. This special content is only available to Disney park visitors and can be accessed with a Nintendo DS.
The Pirates of the Caribbean: At Worlds End Nintendo DS Download Program once again marks a milestone for Disneys unmatched ability to synergize the best of its business," said Graham Hopper, executive vice president and general manager, Disney Interactive Studios. This first ever technology partnership between Disney Interactive Studios and Disney Parks blends our shared focus on innovation and creativity, offering a truly memorable and magical experience for families."
We are committed about giving our Disney park visitors an innovative, relevant and rewarding experience every time they visit," said Michael Mendenhall, executive vice president of global marketing for Walt Disney Parks and Resorts. As we look for new ways to enhance our guests visits, the Nintendo DS is a perfect fit for our program since it is popular and easy to bring to the Disney park."
The Nintendo DS Download Program for Pirates of the Caribbean: At Worlds End is available free of charge to any park guest carrying a Nintendo DS system that contains a copy of the video game. For Nintendo DS owners without a copy of the new video game, Pirates of the Caribbean: At Worlds End will be available for purchase in stores at both parks. The program will begin on May 22 and is scheduled to run through Labor Day.
http://www.nintendoworldreport.com/newsArt.cfm?artid=13495