Princess Celestia and Princess Luna are in Canterlot in their royal castle, they are busy at throne room doing their daily royal duties. In the throne room they are there with their royal guards guarding them and protecting them. If you want their attention then do something that will catch their attention, and dont forget that they doesnt know who you are

Princess Celestia : Well dear sister, another day at our royal duties...

Princess Luna : Yes..I agree with you sighs