No passport is currently needed to drive (or walk) across the US/Canada border. There is some discussion that a passport will be required to enter the USA after 2008. However, Canada has no plans to require American citizens to have passports to enter Canada.
Be prepared though- depending on the officer you get and they day theyve had....we have had some give us a hard time asking why we thought it would be ok to go in without a passport....and some who werent happy with just our license and one who made us empty the entire car and take apart speakers. We've never been turned away but theres always this fear that they are about to and probably would have any second.
Wax museums, lots of hotels, lots of souvenirs....the beauty of the falls can sometimes be lost on visitors because of sensory overload.
We have season passes to Marineland and go practically everyday during the summer and have never experienced any difficulty crossing without passports. The only problem we have had is the long wait to get through customs.
Maybe because my husband drives a nice little sportscar they like to give us a hard time
I think we may do Courtyard by Marriott -- they do have packages that are a good bargain. Thanks so much everyone