Thank heavens they were found.
We did a theme park trip in the middle of the week recently and though there were lots of kids they were all in school groups.
We commented that in the past the kids would have been left to go round with their friends and teachers/supervisors left in spots that the kids could check in, etc.
This time the kids were all in organised groups with a responsible adult and it was much, much nicer for the other guests in the park.
Last time we were at Alton Towers (in late 2020 in between lockdowns) I had to tell off a group of teenagers who were behaving really annoyingly and not observing any sort of personal space, let alone social distancing. Thankfully they were the type of kids that were scared when an adult told them off, not the bolshy sort!
Hopefully whatever the scenario these kids managed to wander off on their own, their respective carers learn one hell of a lesson from it.