What is the recommended technique for making the destination labels/stickers on a stacked suitcase cake? I was thinking edible images, but didn't know if there's another method. Thanks!

Hi, make some labels out of pastillage or flower paste so they are hard and edible images are probably the best as be the cleanest looking. You could paint pictures on if you are confident with painting. HTH

I used edible paper and edible markers to trace the designs I wanted and then attached them to fondant with piping gel.

I made a luggage cake and used edible images. It was my first time. First I downloaded the flag or logos from some places my MIL have been, put them all in one page and took it to a bakery supply store that have the printer. They worked perfect!!!

You can see the cake in my photos.