The package that I have for our upcoming cruise has gratuities included. I have the all drinks and WIFI package.
VAT is only added while in port at Port Canaveral because it's a US ports. Once the ship leaves VAT is no longer applied for the rest of the cruise, including other ports.
Below is from my booking so I assume you can order from champagne bar since only 2 bars are listed under signature venue.
The Easy Plus Package covers all the above served at our bars, buffet, main restaurant and specialty restaurants. What?s more, it also includes private islands, but does not cover the signature venues (Venchi 1878 establishments or Jean-Philippe Maury venues, MSC Virtuosa Starship Club)