Wear a mask. It will be obvious once you arrive. Strolling a deserted beach, no, but any place that you have a chance to be near people, wear a mask.
HiLo is not considered an attraction, it is a supermarket. You are allowed to buy food. But DO NOT take public transportation, take the JTB certified transportation.
This is truly all common sense precautions, if a business is open AND in the Covid Resilient Corridor, you are allowed to enter as long as you mask, sanitize and follow the Covid protocols.