Puerto Rico is a U.S. territory and follows U.S. federal immigration rules. U.S. citizens traveling directly from another U.S. jurisdiction do not need a passport, but adults flying still need TSA-accepted identification and state IDs must meet current REAL ID rules. Other travelers need the same lawful U.S. admission, visa, or ESTA status that applies to a mainland U.S. trip. The currency is the U.S. dollar. Cards are widely accepted, but carry limited cash for parking, beach services, kiosks, tips, and vendors whose only electronic option is ATH Móvil. Most visitors cannot register for ATH Móvil because it requires a participating ATH bank or credit-union debit card. Uber is strongest around metropolitan San Juan; an app service-area map does not guarantee a driver for a remote return or early flight. Rent a car or prearrange transport for island exploration. Vieques and Culebra ferries leave from Ceiba. Book both directions through the official Puerto Rico Ferry website or City Experiences app, recheck service alerts, and plan local transport on the islands because mainland rental cars cannot be ticketed onto the ferry. Hurricane season runs from June 1 through November 30. Monitor NWS San Juan for storms, flooding, heat, and rip-current risk, never enter floodwater, and obey beach flags. Power and water interruptions can occur, so confirm backup arrangements with the accommodation. Use mosquito repellent because dengue and Zika are present. Before flying to the mainland, allow time for the required USDA agricultural inspection of food, plants, and related items.
There is no visitor payment app to install.
Puerto Rico uses the U.S. dollar, and credit and debit cards are widely accepted at hotels, restaurants, supermarkets, rental agencies, and established shops. Carry a modest reserve of small U.S.-dollar bills for parking, beach chairs, tips, roadside kiosks, small food stands, ferries or taxis on Vieques and Culebra, and any temporary card or network outage. ATH Móvil is genuinely important locally, but its own help center requires a phone number, email, and an ATH debit card linked to an account at a participating bank or credit union.
It also says only regular or branded ATH debit cards from participating institutions can register. A mainland or foreign Visa or Mastercard is not enough merely because it carries that network logo. Do not expect to link an ordinary mainland U.S. bank account to it.
Current local and traveler reports describe cards and contactless payment as common, including outside San Juan, but confirm before ordering because some small vendors accept only cash or ATH Móvil. Bring a physical debit card if cash withdrawals may be needed; contactless ATM and cash-back availability is inconsistent. Prefer a staffed bank or business ATM, review the operator fee, shield the PIN, and monitor the account. Carry a second card separately, enable transaction alerts before travel, and confirm the final amount before tapping.
The useful setup is existing cards plus limited cash, not a Puerto Rican wallet account.
These apps need data
Guac eSIM covers Puerto Rico with plans from $0.58 per GB. Install it before you land and activate instantly.
How to Pay in Puerto Rico