Most car rental companies in Port Moresby require a credit card for renting a car. This is because it serves as a guarantee for any potential damages or unpaid fees.

When renting a car in Port Moresby, you will typically need the following documents:

• A valid driver's license from your home country or an International Driving Permit (IDP)
• A valid passport or identification card
• A credit card in the name of the primary driver for the security deposit
• Proof of insurance coverage (may be provided by the rental company)

Most car rental companies in Port Moresby require renters to be at least 21 years old. However, some companies may have higher age restrictions, requiring renters to be 25 years old or older. It is best to check with the specific rental company for their age requirements.

The process for returning a rental car in Port Moresby may vary slightly depending on the rental company. Generally, you will need to follow these steps:

1. Fill up the gas tank before returning the car, unless the rental company has a policy for returning it with an empty tank.
2. Remove all personal belongings from the car.
3. Park the car in the designated return area or follow any specific instructions given by the rental company.
4. Return the keys to the rental desk or drop them off in any designated key drop box.
5. Have the rental company inspect the car for any damages if required.
6. Settle any outstanding fees or charges, such as fuel costs or toll fees.

If you return the rental car late in Port Moresby, you may be subject to additional fees or charges. The specific policies and fees for late returns vary among rental companies, so it is important to familiarize yourself with the terms and conditions of your rental agreement. It is always best to return the car on time to avoid any unnecessary expenses.

Insurance coverage varies among car rental companies in Port Moresby. Some companies may include basic insurance coverage in the rental rate, while others may offer it as an additional option at an extra cost. It is important to review the details of the insurance coverage offered by the rental company and consider purchasing additional coverage if needed. Additionally, you may also have coverage through your personal auto insurance or credit card, so it is recommended to check with your insurance provider before renting a car.