Thanks for all the input!
I have felt we were on the right path, but did not want to open a can of worms! We do participate in an annual Sport-o-ree,but recently had one parent give a lenghthy list to the den leader (with the DL's encouragement) after being registered less than one month. Our committee felt a little uncomfortable with the situation and left it to the CM to deal with, but we wanted a little insight from those of you with experience!
We will give out belt loops, pay once-recognize multiples, and question the parents if the list seems a bit out of season, etc!