Just an update fir those that may decide to do a similar trip. We booked our ferry reservations today for third week of July and found a few of our first choice dates already booked. One added note is we wanted, as we are doing the midnight crossing and seas can be a tad rough.. we splurged for a cabin. Sleep. As we will have been camping for five nights the room has its own shower! Yes. Worth the price for rest and shower. So if you plan it might be a good idea to think ahead.
Must add buckland that a cabin is worth it if you have a rough time with motion sickness. For me sleeping through bad waters works well. Enjoy your trip. Newfoundland is fascinating.