The Rainbow Bridge is the best and most scenic way to enter Canada. As the only pedestrian bridge, I recommend taking that route as well and leaving your car at home. The long walk over the bridge provided some really dazzling and unique views of The Falls. There is no toll to pay when entering Canada but there is a $.50 toll to enter the USA. Everything should go swimmingly if you have your passports in hand. I hear the queues on this bridge are short and timely compared to others.