We just pushed out another update to Anyvite tonight which allows invited guests to update their name and picture right from the event that they’ve been invited to. There’s no need to register for an account or even leave the page to do this, all you have to do is click the link at the bottom of the Attending box. Once you’ve updated your name and picture, you never have to do it again (unless you want to) and they will be displayed every time you’re invited to an Anyvite event.
Try it out the next time you’re invited to an event!