DH Questions: Lovegoods/Ron's absence/blood status

[spa76]

No: HPFGUIDX 188306

Sandie: Happy Halloween, HP fans! I was having a convo with a friend, and we couldn't agree on the answer to these DH questions:

1. Are the elder Lovegoods and Weasleys friends? The Weasleys invite the Lovegoods to Fleur & Bill's wedding, and it's mentioned they live near each other, so why does it seem like Luna and Ron & Ginny didn't know each other prior to Hogwarts? In fact, doesn't Ron "meet" Luna in OotP? Or are we supposed to think Wizarding weddings are huge, so the Weasleys invited many of their wizarding neighbors?

2. How long was Ron at Shell Cottage/away from Harry & Hermione? I thought it was a matter of weeks but my friend and I couldn't settle on an exact time.

3. The last question is about the next gen... In a canon-based fanfic I read, the author referred to the three Potter kids as purebloods and the two Weasley kids as half bloods. Obviously Ron and Hermione's kids are half bloods, but is that correct about the Potter kids (HB Harry + PB Ginny = PB kids?). I kinda thought once a PB wizard married anything other than a PB, their kids were no longer PB.

Thanks!