Canada to US border crossing

We just crossed back into US at Niagara Falls. Very professional. Few questions. We followed a father and two children going across on bikes. Looked like they were packed for quite a ride!! We were traveling home from the UP and decided last minute to travel home through Canada to see something different, and see the falls again (last time was 14 yrs ago). Entered canada at sault ste. Marie. Good time! Need more planning in future but no real problems at all.