2023 ISO Retreats & Convention


St. Louis, MO – June 23-25, 2023

Friday Opening Session 7:30 p.m.
Ends Sunday 1:00 p.m.

The final deadline is June 16, 2023.  Why was the date of May 22, 2023 so important?  It is the date we must meet our financial commitments to Carlton Plaza Hotel, the chosen convention hotel.  

How it Works

Some of you may not know that the way conventions and retreats work is to guarantee that a certain number of members will register for the convention by a certain date.  The hotel blocks the number of rooms for us until that date, and they schedule enough staff for meal events (included in your convention registration).  If you do not register by May 22, then the hotel releases the block to other third-party booking services.  

The only way the hotel knows if we met that commitment is if you book your hotel room directly by calling Clayton Plaza Hotel and using our group code “COSA Meeting Group.”  Please do not use third-party booking services (e.g., hotel. com), or use different group codes (e.g., AAA).  The hotel room rate for us is very reasonable.  If we fail to meet hotel commitments, then we will have to pay thousands of dollars for meeting rooms, which drives up registration fees for the next convention.  If scholarship funds are needed, check with your local Intergroup to see if one is offered.  We also offer room-sharing requests in the registration form.  Thank you for supporting COSA.  Tradition One:  Our common welfare should come first; personal recovery depends upon COSA unity.

Convention Registration

  • Early Bird $195 (March 1 – April 22)
  • Regular $215 (April 23 – May 22)
  • Late $230 (May 23 – June 16)
  • Walk-ins Fri $50, Sat $110, Sun $60
  • Extra Guest Saturday Lunch Buffet $40 (June 16)
  • Sorry, no registration refunds after June 16 due to meal commitments, but registration is transferable.
  • Questions:  email registration@cosa-recovery.org 

Hotel:  Clayton Plaza Hotel – call to register
Group Code: “COSA Meeting”

  • Guest Room Special Rate $127 per night if booked by May 22. After May 22, at market rate if rooms are available. 
  • Guest room rates do not include hotel taxes/fees; but do include free parking and breakfast buffet for hotel guests.
  • Most rooms have two queen beds, a microwave and refrigerator–great for sharing a room!
  • The hotel is dog-friendly and allows dogs for an additional $25 per night.
  • Recreational amenities include an indoor/outdoor pool, dry sauna, kids arcade/xbox/playstation/air hockey.
  • There is no airport-hotel shuttle, but the Metrolink in Clayton is a 4-minute walk to the hotel.
  • Visit the St. Louis Arch, Zoo, Museum, Botanical Garden (a 10 min drive or use Metrolink).

Please contact the Convention Committee with any questions, ideas or concerns at convention@cosa-recovery.org.