The way I interpret LHB's reply is what is stocked in Retreat will be included without an upcharge. May be Premium package only, and if we are lucky, some of the wines at $19 for which they would not surcharge us. If they have to bring it to Retreat per your request, you would be surcharged. This is how I am interpreting LHB's reply.
On the December 3rd Ascent Maiden Voyage, I requested and was served the J&H Selbach Reisling without an upcharge. Sometimes I was told it was not available. I looked at the bottle before they poured, and it was Selbach. Hope it stays that way that there is no upcharge for the Selbach Reisling.