Just in case any of you missed it, Charlie (Tractor) made a significant mention for US customers of AT&T who are travelling to the rally, Chilliwack or any trip into Canada. Or, if you live on the border and are getting dinged for roaming when unknown to you a Canadian phone tower collects your signal.
The plan is unlimited data and text while in Canada and 1GB of data per month. It does not expire or need to be renewed.
It is free, it is only open to US customers without a business account, applies to all phones on your plan and only requires a call to the Retention Department. This is a new plan called Canada Roaming Bonus, it started in February. The only way to get the plan is through Retentions.
Here is a link
to a discussion of the new plan.
Note: I do not work for AT&T, just recognize a good deal when I see one.