Just a correction. Rosella has nowadays about 400 beds, and almost all of them in the former private car deck above the main car decks. The cabins below car deck have been mostly ripped out to make better stores and she is now essentially a day ferry. The former crew cabins above the main public rooms were also ripped out, and are nowadays more seating, a cafeteria and also the upper level of the main lounge which nowadays is two decks high. She can swallow a load of 1700 passengers quite good - and as the tax-free areas most likely will be additional seating, I see no reason why she would in that respect be a poor choice.
But yes, she is old, and not that fast, so she will be hungry.
