Would you invite old friend?

[spaghettihooper]

Just wondering on peoples opinions.
Old school friend I've know for years. We attended their wedding 5 years ago. Haven't had much contact since, we don't live close. Would have been close friends though before that and I think life, kids etc have just got in the way.
We are getting married this winter and wondering if I should invite them to the wedding? Not trying to grab numbers or anything but I genuinely think it would be nice to see them and a bit of a reunion. However I'm just wondering if they think it might be weird as we haven't spoken much in recent years.

I don't think a wedding is the right occasion for 'a bit of a reunion'. Why not just reach out and arrange to meet for a coffee?

A wedding invite will inevitably smack of 'making up the numbers'. I had a good schoolfriend who just disengaged when we went to university. Myself and others used to drop her an invite when we were meeting up but she never came, even when we were all living in London after graduation. Fine, I had plenty of other friends.

However out of the blue some years later, I got an invite to her wedding, via my parents' address. It was very short notice and it was clear that I was a 'reserve' guest to make up the numbers after others had dropped out. My main emotion was amusement but it was also a little insulting.

If you want to reunite then do so beforehand and then talk to her about coming to the wedding.

I would reach out and invite for a coffee or something and then consider the invite.

A invite out of the blue could appear to be making up the numbers. Equally if she found out about the wedding and was not invited she could be hurt.

I think it's normal to invite people from our past, and actually it's a lovely way to honour the history and reconnect. Look at all the people who invite school friends, uni friends, old work friends, cousins not seen in decades.. I think it would be odder to only invite current people as that's not going to be many?
If I got married I'd invite anyone who has meant anything to me, no matter how long it's been since we talked.

She invited you to hers. So the default would be to invite her.
Phone her and ask how she's going.