I'm staying at the Raddison in August in a room with a Garden View. AFter reading what people say about staying in the Main Building, are their garden rooms in the main tower?

We paid for a garden room in the Aruba tower (main building), but were upgraded to a partial ocean view which had a slightly larger room when they saw we had two kids with us. If you don't have any kids, try giving the hotel clerk $20

Maybe you could just borrow someone else's kids who is waiting to check-in behind you. After you check-in, you can just return the kids before you go to your room.