It is interesting- the language on the notice for boarding in Rotterdam is much softer - recommendations not a new implementation
’IMPORTANT NOTIFICATION
We look forward to welcoming you on board Rotterdam. In order to ease terminal
congestion, we recommend that guests follow the progressive cruise check-in
schedule below. Our 4 & 5 Star Mariners, Club Orange, and Pinnacle & Neptune
Suite guests are invited to arrive anytime. If you have purchased a Holland
America Line pre-cruise hotel or transfer, your check-in time will be provided
at your hotel or the airport. Guests travelling on shared transport or arriving
as a group will be checked in together.
10:30 AM - Decks 10 & 11 Panorama & Sun Decks
11:30 AM - Decks 7 & 8 - Schubert & Navigation Decks
1:00 PM - Decks 5 & 6 - Gershwin & Mozart Decks
2:00 PM - Decks 1 & 4 - Main & Beethoven Decks
Check-in begins at 10:30 AM and boarding will begin at 11:30 AM. All guests
must be in the terminal by 2:30 PM.’