I guess you can still buy the lic and outdoors card at Prairie Portage (and Cache Bay)  - according to the note below, anyways -

"From the reservations website:
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Quote:

Fishing licenses are required for fishing and must be in your possession. Licenses will not be available for purchase at the following Backcountry/Interior park ranger stations in 2012: Beaverhouse, Lac La Croix, and Atikokan. You are advised to purchase a license prior to your arrival at an outside issuer or online:
External Website Link: Ontario Outdoors Card online
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