how many days cruising with carnival to become a diamond
Carnival's Most Loyal Cruisers & Grandfathering. Most of the program's top tier benefits, previously granted once a member had achieved Platinum after sailing 10 times, are being divided up between the two new upper tiers, Platinum (75-199 cruise days) and Diamond (200-plus days). For some program members -- but not all -- a grandfather clause offers protection.