Gosh….I feel dumb because I didn’t get the idea I was supposed to bring something from that wording. That’s very confusing and I would be perplexed by the invite. At that point I would just call and ask. I don’t think the host is going to get what they want because I don’t think guests will have a clue.
I also didn’t necessarily get that the “shared plates are encouraged” mean that this event is a potluck affair.
For one thing, the invitation looks too formal to me for someone to think that it means “Hey, this is a potluck party, & we’re supposed to bring a dish to share!” “Potluck Party” just doesn’t go w/ the level of the more formal font of the invitation, in my opinion - but I suppose it could be someone trying to be fancy in their wording.
My initial thought, upon 1st reading it, is that appetizers will be provided.
And the “shared plates are encouraged” could possibly mean that invited couples are supposed to share a plate as they graze together on the provided appetizers.
Like, for instance, on some restaurant menus, there might be a note about sharing not being allowed or that there is a surcharge for sharing of plates.
And, on this particular invitation, the event organizer is saying, “We actually want & encourage our guests to share their plates.”
If the event organizer wanted to the invitees to bring something to share, I’m thinking the wording would be a little different - please bring a DISH to share instead of the word PLATE. To me, PLATE signifies one plating/one serving while DISH indicates a food item plentiful to serve more than 1-2 people, if that makes sense.