A genuine congratulations to you! However, I think this is a good opportunity to point out that it is not proper etiquette to hold onto more than one offer at a time. Many of us, including myself, are put on multiple waitlists and if people are holding onto multiple offers, this just holds up the whole process for everyone else. If you do have more than one offer, PLEASE do not wait more than one week to make a decision! Your decision affects many other people. Again, congratulations though!