You will make reservations there, you can usually do up to 3 nights, the buffet you don't have to make reservations for or Bellavista. Only the Asian and the Italian. Once you arrive I would just make them then.
Make the reservation(s) early on your stay, we try and do it shortly after getting settled in, we prefer the Asian, we try and eat at them or the Italian once per stay.
you can always get 6 pm or 9 pm, but if you want time before that call 2 days prior and you should be good.
Last time we were there I thought you could only make same-day reservations? Or possibly I was too drunk to remember...
can i suggest making reservations for 4 instead of 2... invite a couple you meet that day or have met during your stay. easier if just 2 show up for a table of 4... then if 4 show up for a reservations for 2.