expression
please do ... (polite imperative)
Polite imperative form of なさい, used after the -masu stem of a verb. More formal and respectful than なさい, often heard in service contexts or formal requests.
See also: なさい
少々お待ちなさいませ。
Please wait a moment.
ごゆっくりお過ごしなさいませ。
Please enjoy your stay.