Just throwing this idea out there:Can you use cupcake liners to match the cake color, then use white frosting for the cupcakes?I'm picturing tiny fondant fishing poles on top. You can pipe a small fishing line from each fishing pole.
I did something similar recently, but it was a 4 hour trip.I had refrigerated a cake in a plastic cake carrier, put the carrier into a cooler, and surrounded with bagged ice. It worked very well, and there were no leaks.Edited to...
Any candy you use should be fine, particularly those that are sugar-coated like gumdrops, or hard-shelled, like gumballs. That cake is precious. Don't forget to post a picture when you're done!