Ask them if they cover CDW insurance in Costa Rica. Have them email you a letter and print that out to take with you.Liability insurance purchased on third party travel websites and insurance that accompanies US credit or debit cards are not acceptable forms of coverage. She said it includes the insurance and it has the child booster seat listed as well. These sample letters can be used in various circumstances you may encounter that require you to communicate with insurance companies. We reserved a rental car for a good price but have heard horror stories about the insurance 'scams' that happen. Does anyone have advice? 107 votes, 57 comments. Booked a 2 week rental through "Solid" car rental. Shop today and find out if you qualify to save on your health coverage.