Ready reserve grievance is about what constitutes an assignment, being notified and on your schedule or actually showing up to the airport as a ready pilot.
On the 5 day thing, get over it. As pilots we are always evaluatin the other options, now that we have a deadline to pull the trigger make up your minds and move on. My father was once given 20 minutes to decide whether or not to move his family 800 miles.... 5 days is pleanty.