プレオープン

noun

pre-opening; soft opening; preview event

Refers to a trial opening or preview event before the official opening of a store, restaurant, exhibition, or similar.

• 新あたらしいカフェのプレオープンに招しょう待たいされた。

  I was invited to the pre-opening of the new café.

• プレオープン期き間かん中ちゅうは全ぜん品ぴん20%オフです。

  During the pre-opening period, everything is 20% off.