Does it matter to you if I am a card carrying member of RWA? Like, will it put me to the top of the slush pile, or will I get filed right alongside the non-RWA members?
The slush pile is stacked up (or down actually) in order received. You can be a card carrying poodle and rise to the top of my slush pile...eventually.
RWA membership is good for a lot of things but slush pile priority isn't one of them. Other agents may differ on this one.