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We sent the invitation out to 250 businesses throughout the City, but only 21 RSVP and 6 show up at the reception. As of today, we have 34 surveys return. After the October reception, I would do different the followings if we have another reception:
- Have two speakers instead of three
- Different location, maybe in our town square
- Morning reception
- Following upt with an email and phone call to those who RSVP
- Emphasize free food on the invitation.
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Mr. M. took care of the first part:

- Have two speakers instead of three - Fine
- Use a different location, maybe in our town square - I changed the first word to a verb to make them parallel
- Hold a morning reception (I'm not sure what you mean. Morning reception instead of what? Hold a morning reception instead of one in the evening?)
- Follow up with an e-mail and phone call to those who RSVP (Keep verbs parallel)
- Emphasize free food on the invitation (None of the others so far have ended with a period. Keep consistent. The point itself is a little odd - perhaps emphasize that there is no cost rather than "free food")
Comments  
Please help.
 BarbaraPA's reply was promoted to an answer.