Can anyone tell me if I can use the same meeting link for additional meetings? That is, use the same link for a weekly meeting?
Yes. (But make sure it’s a unique name, as otherwise you might find someone else using it!)
How long does the link last for? Does it eventually expire?
If I understand it correctly, you can use the link as long as you want, since the meeting gets created once the first person joins.
The room closes as soon as the last person leaves. But as soon as someone goes to that URL, it is recreated.
There’s no persistence is that sense, but only because there’s no “room” either. It’s just a way to talk about people using a common identifier to share a session.