I guess the question is whether you just want to experience all of the restaurants or if you want to experience all of the MDR menus. Navigators from 5-night double dips on the Dream (assuming you're on the Dream since you said summer) from 2015 show the following...
nights 1, 2, and 3 are standard rotational MDR
night 4 is Pirate Night
night 5 is the See Ya Real Soon menu
So my assumption from this is that you will visit different dining rooms on nights 1, 2, and 3, then 4 and 5 will be repeats, but who knows in what order. Pirate night on night 4 is consistent with what I'm seeing on my reservations for my two 5-nights I have booked for this summer.
I don't like missing the MDR menus, so I always book Palo or Remy for Pirate night.