Is an eSIM better than renting a pocket WiFi when traveling between islands?

For most travelers, an eSIM is more convenient. There's no need to pick up or return a physical device, no extra gadget to charge, and no risk of losing it. You get instant mobile data directly on your phone as soon as you land. If you need high-capacity sharing for a group, a pocket WiFi can still make sense, but for solo travelers or couples an eSIM typically offers the best balance of price and convenience.