Founded in 1960, the Three Sons has been a staple of Milford, IA retail. From Herman and Emil Richter, owners, was born the University of Okoboji, a ficticious university that calls the entire Iowa Great Lakes the campus of the U of O. Part of the experience of shopping the three sons, if walking the old battered floors, and taking a trip upstairs for half price, plus a buck. Brands you would expect in Milford Iowa are abundant, such as Patagonia, Oakley, Under Armour, Tommy Bahama, and more. There are currently 2 other stores; one at the amusement park, and another near the Regal Beagle called the bridge store. No self-respecting visitor to Okoboji leaves without visiting one of their stores.

Arrowood is a year-round conference center and hotel with over 100 guest rooms, whirlpool suites and a "Great Room" for hosting group events and hospitality suites. Formerly known as Village East, the resort offers an outdoor pool, deck, playground, volleyball and croquet courts and a heated indoor pool area. Hotel goers can also enjoy an on-site salon, Minervas Bar and Eatery and lit parking. Located on Brooks National Golf Course, Arrowwood Resort offers some of the finest lodging around. Years ago, Brooks Golf Course clubhouse was actually housed on the rear side of Arrowood, but since then, the course has been converted to 27 holes with a a new separate clubhouse. Also, the Racquet Club was a part of the facility, offering workout facilities, racquet ball, and tennis. However, with the addition of the YMCA, the racquet club was unsustainable and converted into retail.

Okoboji Boat Works is home to "The Fish Shack" and "The Inconvenience Store". Formerly a marina of thriving boat sales since 1890, OBW now offers up many different rentals, a 24 hour gas dock, excursion boats, and more. I remember the days as a child of fishing for crappie and blue gill here and along the docks of Smith's Bay. Though the scenery has changed, the outstanding fishing has not.