You are looking for a solution to synchronize data between your online website and your local store; you are looking for a quick solution to manage your cafe/restaurant. OpenPOS is a must have Plugin to do that.
Demo: https://codecanyon.net/item/openpos-a-complete-pos-plugins-for-woocomerce/22613341
source http://www.codelist.cc/plugins/242132-openpos-v460-woocommerce-point-of-sale-pos.html