Offences away from home....help!

[Henry]

I have taken the opportunity of a funded trip to a conference to take the boys away: they have been on a course at the sailing club.
The city in which we stayed has an excellent department store with a brilliant school uniform section from from which we have bought generic uniform before.
My nearly-fourteen-going-on-four year old had a total meltdown in the store which caused embarrassment to him, to me, and to the assistant.
After a long cooling off time, I promised him we would have our conversation on our return home (Wednesday).
I would unequivocally have paddled for that, but suspect that the moment will have passed in three days.
Anyone else had a similar one? If so, how did you resolve it?
Thanks,
Henry