We are two senior travelers. We will be flying into Toronto (YYZ) on Sat. evening (9/28). Because we are arriving at night, we are spending that night in an airport hotel. On Sunday morning, (9/29), we would like to go to Niagara Falls, and return to downtown Toronto on Monday afternoon (9/30). We have had trouble researching our travel options: it appears that some of the trains do not run that late in the season, and the shuttles seem expensive. Can anyone provide suggestions ?