MHO,
for the night part, as per ur plans to dinner.
for the day part, "mai too liaoz" (dun wait oredi), bring her to lfs ard singapore, get her interested in the reefkeeping hobby. then she will gain an interest and knowledge on the hobby. most impt of all, next time she will not nag at u for spending monies on the hobby. u know how monies draining this hobby is.