We were on the Apex in March. Made reservations pre cruise in my CP for SD/ATD for 6:PM, every evening in the Cosmopolitan restaurant. Once on board and after dropping off our carry on(s), checking in at our muster station we went to the Cosmopolitan restaurant to verify our reservations after finding a two top in a location we liked. We were told reservations were not being honored. We were then told as long as we showed up by 6:PM we would have the same table each evening. We did, never had to wait and had the same table every evening. I guess an unofficial standing reservation.