You can TRY and book now and hope to add
free dining if and when avail.,many people have successfully done this in the past.However, free dining promo is typically offered for a specific allotment of rooms at resorts.It is generally offered on resorts that are below a projected occupancy level for a certain time period. For example, last year I booked at Pop for sept before free dining came out.When the promo came out I tried to add it and was told,there was no more avail. rooms at POP eligible for free dining ,I ended up at Asmo.I know Wl also had limited if any avail.Many people have also had to cancel and rebook, or change their resorts or dates doing it this way.The free dining promo should be announced in early April, my suggestion, be flexible with your resort choices and or travel dates