Question: Saltgrass Steak House is wholly owned by Landry’s, Inc. which owns and operates how many restaurant/hotel/casino/entertainment destinations in 37 states and the District of Columbia?

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San Ignacio Resort Hotel: San Ignacio Resort Hotel is a hotel resort on Buena Vista Street, San Ignacio, Cayo District, Belize.  It is located just off of the Western Highway, above the Macal River valley.  It contains the Running W Steak House, The Stork Club and bar, and the Princess Casino.  The hotel is popular with archaeologists working in the vicinity.

Del Frisco's Restaurant Group: Del Frisco's Restaurant Group (NASDAQ: DFRG ) is an American steakhouse restaurant chain company which focuses on fine dining steaks.  The company was founded in 1981 and became public in 2012.  Del Frisco's Restaurant Group currently operates Del Frisco's Double Eagle Steak House, Sullivan's Steakhouse and Del Frisco's Grille with over 32 locations across the United States.

Bern's Steak House: Bern's Steak House is a steak restaurant in the SoHo district of Tampa, Florida, founded in 1956.  It is currently owned and operated by David Laxer, son of original owner Bern

Valle's Steak House: Valle’s Steak House was an American chain of restaurants that operated on the East Coast of the United States from 1933 to 2000.  The chain's menu focused on steaks and lobsters.  A family run business, Valle’s aggressively expanded during the early 1970s but was unable to weather the financial challenges of the gas crisis and the resulting economic downturn; increasing labor costs, the death of its founder, and the changing dining habits of its customers.  The last Valle’s Steak House closed in August 2000.

Saltgrass Steak House: Saltgrass Steak House is an American restaurant concept with more than 50 locations across the country.  The company is based in Houston, Texas, and is wholly owned by Landry’s, Inc.

Landry's, Inc.: Landry's, Inc., is an American, privately owned, multi-brand dining/hospitality/entertainment/gaming corporation.  Headquartered in Houston, Texas, Landry's, Inc. owns and operates more than 600 restaurant/hotel/casino/entertainment destinations in 37 states and the District of Columbia.  The company also owns and operates numerous international locations.

Kemah Boardwalk: The Kemah Boardwalk is a 60-acre Texas Gulf Coast theme park in Kemah, Texas, approximately 30 miles southeast of Downtown Houston, Texas.  The Boardwalk is built entirely along the shores of Galveston Bay and Clear Lake, and is considered among the premier boardwalks in the United States.  The complex is owned and operated by Landry’s, Inc. , and is home to more than 10 restaurants, a collection of rides, midway games, attractions, a boutique hotel, a charter yacht, a 400-slip marina and multiple shops.  There is no charge to walk around on the boardwalk.  Tickets for rides can be purchased individually or all-day ride passes are available.  Restaurants on the boardwalk include Landry’s Seafood, Bubba Gump Shrimp Co. , Saltgrass Steak House, Cadillac Bar and many others.

Great Steak: Great Steak (formerly Great Steak and Potato Company) is a chain of fast-food restaurants specializing in cheesesteaks and potato dishes.  Great Steak is a wholly owned subsidiary of Kahala Brands of Scottsdale, Arizona.  The chain was founded in Dayton, Ohio, in 1982.  As of 2010, Great Steak had nearly 160 locations in the United States and abroad.

Opal's Steak House: Opal's Steak House is a historic building located at 871 Park Avenue in Hot Springs, Arkansas.  Opal's Steak House was constructed between 1946 and 1948 to serve tourists visiting the thermal springs in Hot Springs; its location on Park Avenue served travelers on nearby U.S. Route 70, the main highway between Little Rock and Hot Springs.  The building was constructed in the Art Moderne style, which is visible in its curved stucco facade and horizontal features.  In 1952, the restaurant changed its name to the Golden Drumstick Restaurant; the building has since served as a clothing store, a furniture store, and a laundromat.  The building was added to the National Register of Historic Places on February 11, 2004.

York Steak House: York Steak House was a national chain of restaurants in the United States that specialized in steaks and potatoes.  It was among several chains then owned by cereal manufacturer General Mills.  Though popular in the late 1970s and early 1980s, the majority of its locations shut down in 1989.  The restaurants, located primarily in shopping malls, generally had a floorplan of a cafeteria (cold items on one side, hot items on the other with the cashier at the end).  This combined with a decor composed of subdued lighting, heavy wooden furniture, and iron chandeliers.  York Steak House was purchased by Uno Restaurant Holdings Corporation.

Supporting paragraphs: Saltgrass Steak House Landry's, Inc.
Answer: more than 600