Sorry forgot a couple of points... shops will be closed on Bastille Day and the fireworks kick off after dark around 10ish. Trocadero is the best place to watch them but people start congregating there late in the afternoon / evening so it will be busy busy busy :o)
DÃ©jÃ  vu (/ Ë d eÉª Ê ÉË Ë v uË, - Ë v j uË / ( listen); French pronunciation: ( listen)) is the feeling that the situation currently being experienced has already been experienced in the past.
Jamais vu (from French, meaning never seen) is a term in psychology which is used to describe any familiar situation which is not recognized by the observer. Often described as the opposite of dÃ©jÃ  vu, jamais vu involves a sense of eeriness and the observer's impression of seeing the situation for the first time, despite rationally knowing that he or she has been in the situation before.