ATMs dispensing US currency are easily found. Credit and debit cards are widely accepted. Watch for mandatory fees at upscale hotels and resorts.
Generally, you tip in Puerto Rico as you would on the US mainland.
Bars $1 per drink.
Luggage attendants $1 to $2 per bag for anyone who helps with your luggage.
Restaurants 15% of the bill.
Taxis 15% of the fare.