Save the date- RSVP

How odd but yes I would read it that the STD was in fact anminvitstion and they wish you to reply!

This does seem unusual, but I would agree, sounds like the save the date is actually an invitation. Would seem about the right time frame as well? I think in terms of who's invited, the bride and groom haven't been very clear - if there's a space on the RSVP to put how many people are coming, I would assume it's quite open to the whole family going? Could you/your parents contact your cousin just to clarify?

Is it possible that the B&G have jumped the gun a bit by having the wedding website go 'live' so soon? Maybe they wanted th website up and running so people can see more information about the venue etc, but made the mistake of having the RSVP bit up and running already too?

However I find it odd it didn't say there's an invitation to come!

Surely as its a family wedding your parents could just ask?

It does seem a little odd - sounds more like a sparse invitation than a STD.

I think it's best for your parents to ask who the invite was for before you RSVP with all your names.

I would think it's actually an invitation and that the bride and groom aren't familiar with the difference between that and a STD. If they received it quite recently and the wedding is the end of September I wouldn't think that a formal invitation will be coming as well. I would also think that it is just your parents who are invited if that's just who the envelope was addressed to.