It mostly depends on your party size. When it's just the 2 of us, we don't make reservations. Whenever we are more than 4 we always make a ADR. Even if we are just stopping by the desk at the end of the evening and make it for the next day. Also, we usually do a walk up as soon as they open. If we want to do a breakfast for around 8:30 we always make an ADR. You can always just pick up the phone in your room and call and make it before heading down. BTW--Kona Cafe can be quite popular for breakfast.