If it makes you feel any better, we planned a last minute surprise trip to celebrate my son's birthday this past April. His aunt and uncle came with us! We booked our (non-refundable) accommodations and then tried to book FP. The FP system was not allowing us to book anything for my husband. When I called Disney for help, the CM told me that our dates were blacked out for our APs. We still went and had a great time (kids said it was their favorite trip ever). I felt like such an idiot, but we made the best of it!
ETA - In a final twist, we realized on our last day that the blackout dates for our trip had actually been lifted by Disney.