although i have not used the resource you note, i have most of the hotel/motel 'club/discount' cards and find them convenient to save a few $$ when we travel between nj and the carolinas/florida. not sure which routes you travel, but i have found the following resources good to review before starting out so that i know where the 'walk-in'rates are offered. those rates are sometimes the best rates available despite sr/aarp/aaa/club member rates. and some 'club' cards will accept the discounted overnite rate toward their rewards programs.
http://travelcoupons.com/
Hotel Deals & Discount Hotel Room Coupons - HotelCoupons.com
The I-95 Exit Information Guide - Campground and RV Parks
if not convenient to review the coupon books before leaving on the trip, they can usually be picked up at gas stations and welcome centers en route to your destination.
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Not sure if I have free time...or if I just forgot everything I was supposed to do!