I just returned from Puerto Rico. I highly recommend the free grocery delivery from Supermax. It seems you have to put in your order about 12 hours in advance. We arrived late Saturday night (got to the resort past midnight) and wanted groceries delivered in the morning but the earliest option was 1pm. This was not a big deal. If you download the app, you will get an alert when the delivery van is nearby and you can see it's location on the map. The van pulls up right to the lobby and there were plenty of grocery carts available on the left. This saved us time and round trip Uber fares (we did not rent a car).
I recommend ordering from or eating at Katrina. We have been ordering from them the last 2 years but this year we noticed the food improved. We ordered the seafood paella and it was a larger portion and much better. We also enjoyed their mofongo.
I also noticed that the activity center is opened later, until 10pm. Everything was great. Already decided to come back next year during the same week.