This response is based on the information provided.  We suggest you discuss with your contracting team, program team, GPC coordinator and/or legal department as appropriate. 

Your wing should have a GPC monitor most likely working in the Contracting Squadron.  That person would have the flow down of Federal, DoD, USAF regulations, policies, and requirements.  AFI64-117 para. 7.12.8 addresses Moral, Welfare, and Recreation items.  Per para. 7.12 you (the requesting squadron) will need additional authorization before the purchase may be made if approved.