Thank you!
I ended up booking the Plus package, since it was "only" 11 euros extra per day, and want it for the convenience factor as well as having a better selection in beers, drinks, freshly squeezed orange juice, mineral water in bottles etc.
It would certainly be easier just having a minibar compared to using room service, but hopefully I can get them to bring more than one beverage at a time and then use an ice cooler or similar in the cabin.