I am fairly confident that in reality there has been NO change in the rates and that the OP's family has been charged the additional adult fee on previous stays (when applicable, remember some room categories DO NOT charge the additional adult fee). The OP continuously rejects suggestions to compare the total reservation prices on his original reservations versus what he is seeing online and is instead obsessing over the listed per night rate. It has already been explained that a systems upgrade at Disney resulted in a change in the way the per night rate appears on room only reservations and the more recent upgrade this weekend has changed the way the per night rates are displayed yet again. Thus, reservations booked prior to October 2006 would show the per night price with any additional adult fees already included which would explain why the OP doesn't think they were charged an additional adult fee in previous stays. If the OP made his reservation after October 18, 2006, the per night rate would NOT have reflected the additional adult fee; however, the total reservation price WOULD have INCLUDED the additional adult fee. Now, after the system change at Disney that took effect on the 23rd of this month, the per night rate displays as $25 more to reflect the additional adult fee BUT the total reservation price most likely matches the total reservation price on his paper confirmation.