Is 30 NM a reasonable distance? It seems like extreme overkill to me. My largest aircraft never get more than 300 yds away. If that. Just shutting things down for the sake of it.

When Obama's campaign shut down our field, the airport was 2 towns away. Close to 25 miles. I did get the NOTAM to my email, through the AMA. As they have my info being a member. Not sure that the park flyer guys would get the memo, but I agree that I am sure they will know if you are in the air. Especially if you are at a recognized RC field. There were only 3 shut down by the NOTAM I received.