I agree the Red Cross will not be a problem, any more than they, or any big organization, usually are.
The detection is only 1/2 the issue. Getting warnings, in seconds, to remote areas, is still a challenge. Keeping any sort of sophisticated equipment running in the tropics is a chore, combined with a lack to expertise, will be daunting. Technology should be able to overcome all this soon.
From the video I saw, the hotels may have actually saved lives. As a National Park, you would have had less people, but they would have had a harder time getting to high ground. From the videos I saw, most of the tourist hotels were undamaged above the ground floors. People who were on the second stories could casually point a video camera and shoot footage of the destruction.