Although there is an ancient and unenforced FCC requirement for a
radio license, no one checks for it. I have never been asked for
insurance papers either (been up there 4 times, once each year for the
last 4 years).

Also, it is easier if you land at an airport with a permanent customs
officer, that way you don't have to sweat your arrival time and he
doesn't have to travel to check you in. It is also somewhat easier to
avoid the big airports. This is true of coming back to the US.

There is the Canadian "green book" that is the Canadian equivalent to
our AFD. Get it and the charts (I use WAC's), and you are set to go.
They use 126.70 all over for Candian FSS.

There are a lot of FSS on the field and they act as an "official
Unicom". They call it a Mandatory Frequency. They will open and close
your VFR flight plans automatically. Some of these are going away,
however. Also, you have to talk to them to taxi out and takeoff. They
are sort of a non-tower-tower. They are not a tower, but they act like
one. Go in and get a weather briefing. They have the actual paper
weather charts like you read about when you got your private!

The air is the same as the US. The rules are similar. If you can fly
in the US, you can fly in Canada. Just update your GPS, get the charts
and the green book and you are set to go.