"20% discount if you have Lufthansa Miles and More card."
"The points/stamp card says it must be redeemed within 6 months of the first stamp, but they seem to accept it after any period of time."
"Ask for the onions and pickle."
"20 Yen discount if you reuse the cup sleeve."
"Something extra for free every day (Mon-Fri)."
"500 Yen service charge (per person) if you sit at a table."