please refrain (from) — a polite request asking people not to do something; often seen on signs and notices.
店内での飲食はご遠慮ください。
Please refrain from eating and drinking inside the store.
写真撮影はご遠慮くださいと書いてあった。
It said 'please refrain from taking photos.'
公園でのバーベキューはご遠慮ください。
Please refrain from barbecuing in the park.