Avi Resort & Casino is a hotel and casino located near the southern tip of Nevada on the banks of the Colorado River in Laughlin, Nevada next to Fort Mohave, Arizona.
 Within walking distance of the California and Arizona borders, it is owned by the Fort Mojave Tribe and operated under an agreement with the state of Nevada.
 It has a 465-room hotel, a 25000 sqft casino and a 260-space RV park with internet access.
CasaBlanca is a hotel, casino, and RV park located in Mesquite, Nevada on 43 acre .
 The hotel includes 480 rooms, 22 timeshare units and a 45 space RV park.
The Castaways Hotel and Casino, formerly the Showboat Hotel and Casino was a hotel and casino located at the north end of the Boulder Strip in Las Vegas, Nevada.
 The hotel consisted of a 19 story tower containing 445 rooms, a casino and an adjacent RV park.
 The Castaways hotel was demolished on January 11, 2006 to make way for an unknown project.
Circus Circus Las Vegas is a hotel, 123928 sqft casino, and RV park located on the Las Vegas Strip in Winchester, Nevada.
 It is owned and operated by MGM Resorts International.
 Circus Circus features circus acts and carnival type games daily on the Midway.
Las Vegas Festival Grounds (formerly MGM Resorts Festival Grounds) is a 33 acre open-air venue located on the Las Vegas Strip, north of the MGM-owned Circus Circus Hotel and Casino in Winchester, Nevada.
The Cactus Motor Lodge, now known as the Cactus RV Park, is a motel located along historic U.S. Route 66 in Tucumcari, New Mexico.
 I.E. and Edna Perry built the lodge in 1941.
 The motel included three wings of units forming a "U" shape and an office, the latter of which was a dance hall when the motel opened.
 In 1952, Norm Wegner purchased the motel; Wegner added an artificial stone exterior to the buildings and converted the dance hall to an office.
 After Route 66 was decommissioned, the motel lost much of its business, and by the 1990s it became an RV park; the motel units are currently unused.
 The motel's neon sign was restored in 2008.
Treasure Island Resort & Casino began as a bingo hall in 1984 called Island Bingo.
 This building started as a 30,000-square-foot space that seated 1,400 people.
 Through its time of success it began to grow further into Treasure Island after Congress passed the Indian Gaming Regulatory Act of 1988.
 This act required states to negotiate gaming compacts with the Tribe as a way to strengthen tribal governments and improve the quality of life on reservations.
 This act contributed to much tribal success for Prairie Island Indian Community in addition to the entire state of Minnesota.
 Shortly after this in 1989, Prairie Island Indian Community signed a compact with the State of Minnesota which allowed it to expand its gaming operation.
 In 1991, the 30,000-square-foot building was expanded with a 25,000-square-foot addition that created room for additional games.
 Not long after this in 1992, the casino was expanded by an additional 25,000 square feet.
 Growth in the Prairie Island Indian Community was shown through this with the opening of a community center, health care facility as well as improvement to tribal water and sewer systems.
 In 1993, a 78,000-square-foot expansion was added which created three new restaurants, valet parking, state-of-the-art kitchen, a gift shop, players club, ballroom and a new entertainment area.
 In the following year, a 137-slip marina and 95-site RV park would open.
 Growth continued as 9,854-square-foot addition for business offices is established in 1995.
 In 1996, Treasure Island made a big step with a $20 million addition and redesign.
 A strategic marketing shift changed the name to Treasure Island Resort & Casino with the addition of new theming and a 250-room hotel transformed Treasure Island into a destination resort.
 The total square footage has 350,000 with 25,000 square feet designed for meeting space.
 In 2001, an additional 200,000 feet were added to the casino, which included a new great entry, higher ceilings to improve air quality, additional games, 70,000-square-foot office space and 60,000-square-foot warehouse.
 An expansion that was completed in fall 2008 included 230 new hotel rooms, 30,000-square-foot event center and a bowling center complete with an arcade area.
 In 2015, Tado Steakhouse was constructed, Tradewinds Buffet was remodeled and the water park & spa construction began.
 The Lagoon and Wave Spa opened February 9, 2016.
Grand Sierra Resort (formerly MGM Grand Reno, Bally's Reno and Reno Hilton) is a hotel and casino located approximately three miles east of Downtown Reno, Nevada.
 The hotel has 1,990 guest rooms and suites, 10 restaurants, including two by celebrity chef Charlie Palmer and a casino with 63584 sqft of space.
 The hotel also has a shopping center, wedding chapel, pool, convention center, 50-lane bowling alley, movie theater, a Race & Sports Book, nightclubs including LEX a 25,000 sq ft venue with a swimming pool, lake golf driving range, a two screen cinema and an RV park.
 It is owned and operated by Southern California based investment group headed by The Meruelo Group.
Rock in Rio USA was a music festival held in Las Vegas, Nevada in 2015.
 A spin-off of Rio de Janeiro's "Rock in Rio" festival, it was first held on May 8 and 9, 2015 at the Las Vegas Festival Grounds—a purpose-built venue on the Las Vegas Strip developed in cooperation with the festival's organizers.
 It shared a similar structure and format to its Brazilian counterpart, hosting at least 120 acts for its first and only edition.
Great Plains State Park is a 487 acre Oklahoma state park located in Kiowa County, Oklahoma.
 It is located near the city of Mountain Park, Oklahoma.
 Located south of Hobart off Hwy 183, Great Plains State Park is nestled between the Wichita Mountains and the Tom Steed Reservoir.
 The area offers water sports, boating, boat ramps, camping, RV parking, swimming beach, playground, picnic areas, cycling, mountain biking and hiking trails.
 The campground spans approximately 460 acre of park land with 56 RV hookups and 30 tent sites.
 RV sites consist of 14 modern water, sewer, and electric sites and 42 semi-modern sites with water and electric.
 Located on the shores of Tom Steed Reservoir, a large lake with 31 mi of shoreline.

Question: How large is the hotel/casino/RV park located south of the Las Vegas Festival Grounds?
Answer: 123928 sqft