Originally Posted by GBEBZ
Cant find official phraseology for that - haha - greater men than me have tried and failed to `educate` `ignorant` pilots - hahah
How about
:
"As you'll know from your preflight briefing, this airfield operates an A/G service. If you don't know the limitations of such a service, we can explain, if you'd care to return to the tower."?
The pilot may well choose not to take up the offer, but they're unlikely to be as ill-prepared in future. Otherwise, they may leave under the mistaken impression that your service is not up to the standard they're used to.