Hey Paula,
Isn't it a real BUZZ to show the wonders of the skies to eager school kids.
But I had a similar D'oh! moment last year.
With about 150 excited youngsters at Camp Wolstencroft, most up on a step ladder, looking through my Celestron CPC1100 in the dark...
When packing up at the end of the night, I realised I forgot to screw the three screws holding the 28kg mount and OTA to the field tripod !!!
Unbelievable!!! Could have ended in disaster !!! But it did not budge nor even loose alignment.
Just goes to show what a STABLE setup the CPC is.