Script fics are rarely ever accepted. Only really excellent ones are accepted. It's just about a smidge away from being not allowed.
Just to expand on Eponine's reply, we also require any scriptfics to be fully formatted as a proper script, which includes full stage directions and setting descriptions. We definately do not even consider script fics which are just a list of alternating dialogue.
Blessed is he who expects nothing, for he shall never be disappointed.