I'll post two questions in one here. The first: How do you attach small, dried fondant flowers to the side of a cake? Would a dab of royal be enough or should I use toothpicks? I'm thinking of something like joelni's cake:
Secondly, I'm donating a cake to an event where they are expecting about 60 people. how big should the cake be (tiers, not sheet)? I know there are serving charts with wedding serving sizes, but is that realistic for other events as well?
So far as attaching fondant flowers to the side of a cake... If you are attaching to fondant, then all you need is a little water, or fondant "glue" (little ball of fondant melted over night in a little water - slimy). If you are attaching to buttercream, then just use icing or the royal, either should work.
Here is the link to the wilton serving charts. Notice that one is for Party Servings which are 1 1/2" x 2" x 4"
Here is a really good picture showing the cake sizes:
I attached dried fondant flowers to fondant with little dabs of buttercream. Some of them were kind of big, and it still worked perfectly. (it's the pink and red birthday cake in my photos) I've attached fondant pearls to fondant with buttercream also.
I bet it was hard to make that much icing come out that red...I have trouble with it getting dry and wanting to crack up when I try to make red fondant.