Diamondback

We will be traveling the week prior to our cruise so we will need to do laundry on board. Does anyone have tips for when the best times the machines might be free? I know it differs by every cruise and what not but has anyone seen trends like early-morning or late-night or early in the cruise vs. late in the cruise affects availability?

We cruise in three weeks and this is our first Princess cruise. We have Reserve Collection Mini-Suite booked which states a benefit of "Priority embark & debark." Our Princess app states we are "Arrival Group B." I believe when we first confirmed Green Lane it gave us a specific time (11:30a?), however, now it only shows the "Group B." Any advice on when we should arrive?