Current SAO employees visiting SI with a valid SAO ID card receive discounts in all public cafeterias within the Smithsonian, except those at the National Museum of American Art and the National Portrait Gallery. Additionally, most of the museums have staff cafeterias or snack bars that offer food at already discounted prices.
Most major museums have shops and some have seasonal sales offering wonderful bargains.
These sales are open to staff before museum hours and are announced in the Staff Bulletin. Museums worldwide that are not part of the Smithsonian often honor Smithsonian employees bearing valid ID cards with an admission discount. Colonial Williamsburg does the same. Be sure to ask if you are eligible for a discount when visiting other museums. The Smithsonian Associates offer discounted memberships to Smithsonian employees.