Years ago, when the children were teenagers, we disembarked and found our cases all together. My eldest daughter had a fairly distinctive red case and thought that the one by our group was hers. On closer inspection she discovered it wasn’t her case and by now, the baggage hall was nearly empty. It was evident that someone had mistakenly taken hers and had left their own red case. Luckily there was a mobile number on it and I called the number. My daughter’s case was halfway up the M4 on the way to South Wales as the man on the other end confirmed that his case was red! I told him I would visit the helpdesk and sort everything out, so took his red case to the desk and explained everything. My daughter’s case was delivered to our home in about 5 days without any hassle or payment from our side of course.
Sorry to ramble, but I forgot to add the point I was trying to make, which is that having your mobile number on the tag is a good idea. In our case above, the case had well and truly left Southampton but it could still have been in the car park or close by.