Today’s Your Daily Boarding Call is packed with cruise changes, travel alerts, and one airport proposal that could use a few rhinestones.

Carnival’s biggest loyalty shakeup in years begins September 1, as Carnival Rewards replaces the longtime VIFP program with a new spend-based system. Royal Caribbean has also made a much smaller—but very noticeable—change by officially dropping the word “at” from Perfect Day at CocoCay.

Plus, Norwegian Cruise Line expands its Free at Sea specialty dining perk for larger families and groups, while a devastating flash flood at Grand Canyon National Park leaves one person dead, 15 missing, and major lodging and trail closures.

And finally, Tennessee leaders are considering renaming  ...