I know they are in in Halifax on July 19-23 but they are in two different ports in PEI on August 28th to September 1st. Not sure where they are in between and quick look via Google didn't help much. Hopefully you will catch thier arrival in your last week in August.
I'd be very happy to take you out to see them on the kayaks. I did that years ago in Halifax and it was awesome. If you think they look tall from a dock, you should see them from water level!!
In any case, make sure to let me know if you are coming. Barring another family, medical emergency like last time, I promise not to stand you up again.
With great power comes Awesome irresponsibility.