A membership with AARP has some advantages. You can get glasses cheaper and rent hotel/motel rooms cheaper. JC Penny Optical, Pearle Vision, Lns Crafters, Sears Optimcal, Target Optical and many others will give you up to 30% off on your glasses.You need to ask the hotels and motels when you make your reservation.
You can get up to a 20% discount on shoes at Reebok and Rockport outlets.
You can get 10-30% off on books at Borders Express, Walden book stores and other books stores.