You should be able to do all that in the morning. There are tours of the opera house you might not have time for if you want to wander around the gardens longer - but they are all right in the same place, so if you have an... More
You should be able to do all that in the morning. There are tours of the opera house you might not have time for if you want to wander around the gardens longer - but they are all right in the same place, so if you have an entire morning you will be able to get a good feel for all three.