Our TG Caption

You have some things to take care of at home, and don't feel like suddenly shifting your plans to help. So you wait until the party starts. But you wanna be there at the start. Not wanting to miss any action. Especially as magic is involved. You arrive 19:00 (7pm) sharp. When the party starts. You don't see any people outside, but through one of the windows it is clear there is a party inside. Do you go in now, or wait until someone you know comes, to enter together?