Many credit cards offer perks and benefits just for using the card such as extended warranties, automatic rental car insurance, travel insurance etc… Most of these are pretty basic for credit cards these days but some offer enhanced benefits that may or may not be published such as access to airport lounges, free Boingo access, reimbursed Global Entry fees, etc…
While I was browsing through the benefits of the credit cards that I hold, I discovered a hidden gem for my American Airlines Citi / AAdvantage Executive World Elite MasterCard: free enrollment in Avis First.
Full Avis World Elite Benefits:
Save up to 20% on each rental Enjoy [...]