You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
[SARCASM]
It's when they are doing the model 3 delivery event in your area. Elon will go on stage and hand everyone their key cards personally.
[/SARCASM]
Vera, the event is likely a presentation about Tesla vehicles, followed by an opportunity to test drive a Model S or a Model X. Usually there are appetizers and a chance to meet with other Tesla owners or future owners. If convenient, it's worth attending.