I agree with the Chicken...092....not PJ.  Cheep insurance for the cost.  To Bill's thought...how would they know you didn't enter that day....you would have paid your camping fees and have a recipt, etc. from Ranger station when you entered.  If OS is solid on the entry date or you confirm with a phone call, then no need.  I'd venture the phone call. 

pajeff - when are you headed back from your trip?  I recall you were on the water from 7/13-24 from a previous thread? I'll be arriving in Ely the afternoon of the 25th, circa 2-3 PM.  I'm guessing you'll be on the road back to PA by then?

pd