By all means try the CoDA meeting AND the Al-anon meeting, you may find you like one better than the other or that you would like to go to both to fit into your schedule.
My home fellowship is CoDA, I loved our meetings in Toronto before I moved and learned so much there.
But I also went to Al-Anon and liked the meeting there as well.
All three fellowships are similar and they are about US and not our loved ones' substance (as the name may imply).
Don't give up on meetings, I promise that you will be glad you continued to explore and find the meeting that fits for you.
Hugs