What marketing activities for new store opening? - Before Store Opening, - During Store opening, - After Store opening? And ongoing marketing plan?

I agree with Mr. Yasser Ghanim  good answer. Thank you.

before opening: commercials; flyers, advertisements (a lot of it), newspapers if possible. 

during opening: give free services, and good impression especially the interface. 

after opening: good service quality, give a guarantee for your products, and do some offers, sales or discounts (people love this one).

ongoing plan: keep the good offers running all the time, and don't let go of your smile..

try to make protocols & rules for your store and stick to it....