hey hey melissa
you don't say when this trip is, how many is "our family", what hours are the 24, what your budget is in euros, how many beds or is sofa bed okay, one or two hotel rooms? remember that hotel check in is usually after 2-4pm, check out 10-11am, where are putting your luggage?
anne frank's tickets need to be booked online with date and time slots. (annefrank.org) decide if only museum or museum/intro program, tickets are available to book for 30 days, then next month pops up. canal cruises are all over, depending on what cruise you want.
iamsterdam.com/ under see and do, chose what interests you and the gang
are you catching a train or plane after 24 hours, give yourself time to transfer to station or airport. your time is short, stay near transportation area, if you're traveling during busy vacation times it will be busy and crowded. been 2 times to amsterdam, stayed in an apt with 4 of us friends for 6 nights, houseboat for 5 nights with four best friends.
aloha