We drove...we were living in Toronto at the time and that's usually been the place we crossed at whenever we visited her family in the States. We've just always liked Niagara Falls
As you may have seen from other posts here, landing is really no big deal...if the PR application process was the final exam, the landing is the graduation ceremony

All they will do is ask some very basic questions (have you committed any crimes...has your family status changed...what is your mailing address), and they will stamp the CoPR and you will be on your way.