"A get together outside of a normal AA meeting shouldn't rest entirely upon 2 or 3 people." No offense...
Who says it shouldn't... you?
Who decides what 'should' be...?
Life on life's terms often means we don't get OUR own way, we get a Higher Power's way, right?
My own ES&H suggests turning it over and letting go of control. Show up, do what you can, give it your best.