My assumptions were right as the Burrow had quite a crowd if looking through the windows was any indication. The Weasley’s were a given. Sirius, Remus, Tonks, and Harry were there. Remus and Tonks being there was a surprise. They had recently married and I would have thought they would want some time to themselves. But I guess with the war brewing and both of them being known as Order of the Phoenix members, they would be easily targeted. 