Related Clues:

• "Let us know," to an invitee
• Letters on some invitations
• Invitation stipulation
• Answer, shortly
• SASE contents, perhaps
• Invitation acronym
• Party thrower's request
• Say you will, or won't, be there
• Invitation ltrs.
• "We're not serving liquor," briefly
• Party invite letters
• Brief answer?
• "Answer, please" (Abbr.)
• Invitation request, for short
• Abbreviation for "Answer, please"