Onsite rental car was Thrifty, but they moved this year. It looks like the new operator is Allied. Even with 11% sales tax we did well stocking up at the wonderful Ralph's Food Warehouse.
We visited Puerto Del Rey last year and liked it. You need to bring proof of insurance along with pretty much all of your documentation to the office when you check in the first time. Once you setup your account it is easier to check in.
Its a clean marina with good staff. We were not charged for water or power, which made it the cheapest marina we've been to between PR, VIs and St. Martin. Still, it is a very large place and
Cheers, RickG