bridetiffany's Blue wedding

Cake is another thing that FFIL is totally taking care of. FFIL lives in Alabama and is picking out: the venue, flowers, reception, cake, and helping out with our honeymoon hotel!! I know, he's awesome and I'm super lucky. So, since our colours are chocolate brown, Tiffany blue, and pink, I want a cake that colour. I actually am thinking about cupcakes too. I also want a s'mores bar like I've seen around - those are pretty awesome. Where do you get them from? Any suggestions on cake, cupcakes, and s'mores? We're doing the stacked Tiffany boxes, although I have other inspiration in case the cake lady needed a plan b. I also want to get a grooms cake - are any of you planning on doing that? What is the tradition behind the grooms cake? Is it just something the groom really likes? I get confused by wedding planning easily :)