"No Egrets"

People tend to use R.S.V.P. on most of their invitations.    RSVP is a french term that stands for "répondez, s'il vous plaît" which mean "reply please".  
Another term you may see on an invitation is "No regrets".
If you are Scott Pruitt, in charge of the EPA, and committed to polluting our oceans, lakes and rivers,  the appropriate response for you is "No Egrets".