the classic dinner and a movie first date formula is a tried and true choice but it is old.
an amusement park could be a solid choice if there is one close by.
if you feel daring and there is a water park near you that could be a nice change of pace.
an afternoon picnic on the beach or at a nice park.
a trip to a museum or aquarium followed by a nice meal.
or ask her or him, what they would like to do on the date before the two of you go out.
most important be yourself unless you're a total douche bag ass hole.