Hi there. Just adding my comments re Post No 5 from JimmyVWine. Our cruise is in April on the Regal Princess and we purchased the Plus Package at the old price and we recently had an email from Princess which amongst other things listed our Plus perks as follows;
You've got perks with Princess Plus
Included in your fare:
Plus Beverage Package with drinks (up to $15 USD each) like cocktails, beer and wine, speciality coffees and fountain sodas!
Fast, reliable MedallionNet® Wi-Fi
Crew appreciation
Premium desserts (2 per day)
Fitness classes (2 per cruise)
Therefore it looks like we just miss out on the Unlimited Juice Bar.