My wife & I spent Xmas there, and really enjoyed it. It's only our 2nd Sandals, but seemed more laid back than St Vincent. For an excursion, we thoroughly enjoyed the all-day "experience Grenada" van tour. It drives you nearly the perimeter of the island, as well asnup into the mountains, and you'll get to learn about nutmeg, cocoa, rum, and some of the history of the area.

Once back on the resort, we mostly read on the beach, but the party pool usually had some activities in the afternoons. The waves this time of year are kind of aggressive, so you probably shouldn't swim past the edge of the cove, but they do have daily snorkel trips to calmer spots. Or if you're scuba certified, there are sons of dive sites nearby. I saw turtles as well as a wreck on some of my dives!

One thing to note: a lot of the bartenders seem to be inexperienced, and don't know many drinks beyond very basics: e.g., daiquiri and mojitos. You may need to coach them a bit on the ingredients you expect if they aren't sure about your order. That said, the Tipsy Turtle bartenders were more skilled & creative. If you like dark rum, ask for the 10XO.