The Pins
LOL...they are nothing expensive or anything, they are just lapel pins in the shape and look of the Carnival ships and it has the name of your ship on it. Just a souvenior. I use mine on the first page of my scrapbook of each cruise, along with a pic of the ship. No you do not need the pin to enter the past guest reception. I don't even call it a party, it is a reception. The only reason I go is for the free cocktails, LOL I have missed some of these receptions because they were hosting it at times when I was doing something else. The last cruise I was on, they had it while we were still in port, and I stayed in port rather than get on the ship early for it. I think they do that so they don't have to give so much extra food and drinks for free. As for bringing a guest, I don't see why you couldn't bring 1 per invitation. Don't know if they would stop you at the door and ask for the other invitation, I just know that I didn't have a problem bringing my daughter with me.