We've stayed at Rooms 4 times. The latest being Feb 9-16th. Your breakfast is included with your room. Its not fantastic, but there's toast, coffee, maybe pastry, maybe fruit. We go to Shamrock or HiLo and pick up a small jar of peanut butter.
Since Rooms is not AI, we go to the HiLo in town, and pick up drinks, mix, snacks, peanut butter, to have in our room. If you forget something, Myrna's is next door (beach side), you can get drinks or supplies. Or on the road side, there's Shamrock, where you can also pick up supplies. Our favorite restaurants are Alfreds (no bad choices, all wonderful food, big portions, small prices), Chances for pizza, Italian Cafe (road side, great pizza and pasta), Margaritaville is down the beach, sometimes you just want the American sports bar feel/food.

All the staff at Rooms is wonderful. They'll help you if you have questions. Capt Moses is usually nearby, he'll take you onto the water to snorkel or go for a boat ride, or whatever.
No worries. You'll have a great vacation, whether you want to do things and explore, or just chill on the beach. Rooms can accomodate.