Concierge on Celebrity is not like Concierge on DCL. You get lunch in the MDR on boarding day (maybe--reports are that sometimes it's during the cruise), extra Captain's Club points, and on some ships, a slightly larger cabin. That's about it. Yes, there's a Concierge team, but they work limited hours and are available to more than just Concierge cabin travelers.
BTW, most "veranda" cabins on Beyond are infinite verandas: not a veranda but a window that opens.