Tower of Terror won't officially open until January 08 but rumours are previews may start late Dec.Sorry to say but its likely your gonna have to renew that Annual Passport if you want to ride Tower of Terror.But than again who knows it all depends on how well construction is going.I have to say from the latest pics it almost looks complete.
Its the luck of the draw I was the same for Expedition Everest at Disney's Animal Kingdom.Throughout my stay it was offering CastMember,Annual Passholders and DVC members previews of this attraction.The day after I left it started offering previews for guest.
Going with even a secret expectation will ultimately lead to disappointment. If it happens, it will be a nice (and highly unlikely) bonus. Just go and enjoy yourself and don't spend the whole time hanging around the ToT 'just in case'!
I won't loose to much sleep if I miss out on the TOT as I can always ride this in Tokyo if need be.Also I've been on the DCA clone before and while its fun I have no urge to camp outside the Paris attraction.My main purpose of visiting Paris is to ride Crush,catch the new parade and catch up on all my favourite Paris attractions.