The Marriott Fairfield Inn & Suites is the home to South Dakota's largest indoor water park! Conveniently located at Exit 61 off Interstate 90 with easy access to Rapid City Regional Airport, Mount Rushmore, Crazy Horse Memorial, and Rushmore Plaza Civic Center. Come and let the kids unwind in our 30,000 sq. ft. "WaTiki" Indoor water park which includes waterslides, lazy river, and arcade. Enjoy Slider's Bar & Grill. On site On-site facilities, business center, WI-FI, and wired internet for all your business needs. As well as fitness center and complimentary breakfast to start your day out right!