Try Charlie they have office in Aguadilla. If you are flying into San Juan look for car rentals off site, the only drawback is most are only open 9-5 & not usually on weekends. I’ve used Enterprise thru the office in Isla Verde and I’ve found it’s almost half the on site at SJU. They are strict here about using debit cards for rentals so call & ask local office about deposits etc beforehand.