Low-budget party letters

• Letters on a party invitation indicating that booze won't be provided by the host
• Abbr. often near "R.S.V.P."
• Party request: abbr
• Invite abbr
• Inits. on a party invitation
• Party rule, for short
• Message indicating "adult beverages not supplied"
• Setup provider's abbr
• Informal invitation letters

Wikipedia Word definitions in Wikipedia
BYOB is an initialism used on party invitations, meaning "bring your own beverage" or variants. BYOB may also refer to: BYOB (musician) , an English musician B.Y.O.B. (song) , a song by System of a Down from their album Mezmerize BYOB (programming language) ...