I travel a lot, for both business and pleasure reasons. One of the annoying things I face (beside full passport pages) is the many tags stuck to my suitcase which I like to take in almost all my trips. I recently had to give up my favorite 12 years old Samsonite hard-shell suitcase because it was too ugly and I could not remove the tags easily.
This is a photo of one of my other suitcases which is not really old and does not have many stickers:
I know that the best way to get rid of those is to remove them while they are fresh (eg. right after arrival) when the glue still not really dry, but I just keep forgetting and by the time I notice that tags are really stuck and won't be removed.
How do I remove old tag stickers from hard-shell suitcases completely?