After you are awarded your reserve line make sure that you do NOT bid recurrent that touches more than one day of reserve, otherwise, they entire reserve period is dropped.
If you are bidding 15 days in a row, this is especially important (unless it is something you plan to do). Just flew with a Captain who forgot to bid for recurrent training and had 15 days of reserve. All R days were dropped after the recurrent training slot appeared on his schedule and he had to go in and pick up trips to fly.