What were you planning to do March 18-20th? If it does not have to do with Vegas and the Web, it might be time to think again!
Mix09 is going to rock... I have had a chance to look at some of the sessions that are in the works (some of them haven't made it to the session list yet) and more importantly the new technology from Silverlight, to ASP.NET, to Visual Studio to Live\MESH work... It is going to be a rocking event.
Teams here at Microsoft are work enormously hard right now to finish up bits that will be given out and talked about for the first time at Mix! If you are a web developers, you should try hard to make it!
See you there!