The kitchen has pots/pans/utensils. Our unit had a single burner hot plate, microwave, and hot water maker. Plenty for basic cooking, not if you plan to cook a big meal.
There is a pool for the kids. You can take the free shuttle to the other resorts in Laguna (and walk to beach). Not sure about activities at the resort itself. I booked activities through Bangtao Dive Center like diving and sea cave canoe.