I registered everywhere I could this morning for the AZ vaccine (since ON opened it up as of tomorrow for my age group). On wait lists with Rexall, Costco - had no luck with Shoppers though - just couldn't get through the online system. I finally ended up getting an appointment for Saturday and a small pharmacy 30 minutes away. It was a friend who recommended calling the small pharmacies as her friends had luck with that strategy. Hope this helps someone else.