We are staying at the BLT in mid-November. It seems that Free Dining is offered during that time period. It also seems that room discount is also offered during that same time period. The Free Dining seems to get announced earlier and expires earlier than the Room Discount. Neither are guaranteed. The Room Discount would save me more money. If Free Dining is offered first, can I take advantage of that and then if a Room Discount is later offered will WDW let me switch offers?