I find it is easier filming when everyone is asleep so I don't have to blur out other passenger's faces. It also allows me access to areas normally closed off during the day.
This cruise occurred exactly one year ago from Sydney to Melbourne. I recorded this quite early in the morning. Something like 4:45 AM. From memory, the promenade deck is crew only at the bow of the ship.
The basic stuff like coffee, tea and water dispensed from in the buffet is included in your base fare. You will need to pay for bottled water. Princess like to up sell you to the Princess Plus package where alcohol is included (to a certain amount). At the time of cruising, I paid $20 AUD extra per day for wifi because I don't drink alcohol. My friend upgraded to "Princess Plus" costing an extra $60 AUD per day because of table delivery. The Medallion allows the crew to locate you anywhere on the ship when you order food or drinks on the app.