There are a number of apps for cars like Bolt, Uber and e-cabs. We recommend Bolt, which you can also use for e-scooters.
Summer in Malta is hot and dry. The weather websites will say its about 32 Celsius or 90 Fahrenheit. I'm telling you this is a lie! expect 35C (95F) to 40C (104F) during the day and 28C (82F) at night. No sweaters required.
In Malta they use UK plugs - bring a travel adapter
Obviously