I don’t know the tour schedules, but you might be able to see Buffalo State and Fredonia in the same day. If you plan to cross into Canada at the falls you will all need passports. There is a huge outlet mall in Niagara Falls (American side) and the Galleria Mall in Buffalo if you want to shop. Canalside is popular for walking, eating, seeing the river, etc. Buffalo State is just north of the Elmwood Village area - also very popular for the students, so should definitely check that out. Parking can be an issue.