How do I handle being out of cell phone coverage while on 24HR reserve...like say scuba diving, off-shore fishing, sitting in a Cessna, lost in the outback, out mowing the lawn, on a J/S coming back from a trip I picked up...etc.

Is CRS kind to "Hey, I may be out of cellphone range for two hours, do you have anything for me now? I will check back in ASAP."

Thanks in advance.