Alberta is only eastern canada if you live in BC
Saskatchewan can not be legally hunted without a licensedguide. Alberta has the hunter host system as AK NIMROD mentioned. Note that in Alberta the hunter host must accompany the non-resident at all times. . The only exception is if the hunter is left on stand and not moving around. .
I believe BC also requires a resident host but i'm not 100% sure, non-canadians may need a licensed guide.