My FI and I have families that come from different parts of the country, so we have to have TWO AHR's! Actually, we are having three, two in Montreal and one in Halifax. The AHR's in Montreal will both be casual (on is a BBQ at his Dad's and the other is in the VIP of a night club... don't ask) but the one in Halifax will be a little more formal simply because of the sheer number of guests we will have. We are having it in a community centre (that we get for free, yay!) and we are having hors d'ouvres, showing the slideshow and whatnot. Nut it will be an afternoon thing, so still along the lines of casual as well! It's whatever suits you, but we had to keep cost in mind, since we have more than one! Haha