How much mobile data (GB) is recommended for a one-week expedition in Hawaii?

For a 7-day mission in Hawaii, a data allocation of 5-10 GB is a practical baseline. This supports essential operations such as navigation through Waikiki, real-time updates on social media, photo sharing from Haleakala, and light streaming. If your operational tempo includes heavy media uploads, frequent video calls, or extensive tethering, consider a 10 GB or higher plan. It's always better to have surplus data than to face a critical communication blackout.