Wharton recommendation questions have a 7500 character limit for each question. Adcoms mentioned this in one of the sessions.
So recommenders can definitely go a little over the recommended word count
but obviously you dont want them to submit 500 word responses to each question when the recommended word limit is 300 words
The Adcom said that recommenders can submit recommendation answers they have submitted to other schools in a single text box and just type see above for answer in other text boxes
they said they understand that recommenders may not have time to write different answers so wharton allows for them to just copy paste their recommendation for other schools in one of the text boxes and the adcom will glean whatever information is necessary from the recommendation even if the answers arent tailored to the questions asked