By Daniel Kline The cruise lines have managed to get rid of masks and make the onboard experience mostly normal, but some hurdles remain. The cruise industry has faced a perfect storm (so to speak) as it has operated ships at or close to full capacity during the pandemic. While vaccines have kept covid from causing serious illness, they have not eliminated the virus on cruise ships. That’s even with all passengers age 12 and over plus all crew members being vaccinated and all passengers being tested for covid no more than two days before their sailings. Now, Carnival Cruise Lines (CCL) – Get C…