Mine said the same. They've been SMSing and now got through on a mobile. Power still out and no one can get in hotel rooms if they left because of the power key card things. They aren't hanging up cause they want to hear what we are hearing here or on the USGS site since they can only hear things from the hotel and local people working with all the residents and guests since no one can get news, etc.
They also said while the hotel was trying to get people out on the golf course that half were doing what they were being told and half were running up the stairs (obviously more concerned about tsunami vs. continued quakes and the building being checked)
Ironically, I had a flood in my house so they had just been trying to call me checking on damage here and then had the earthquake and phones went down.
We stayed at the Hapuna Beach Prince Hotel located on the upper Ws of the Big Island (Kohala Coast) a few months ago. Darn close to those quakes. Not very populated up there; Kona is about 25 miles to the S and there are only about 6-8 hotels in that 25 mile distance. If you have google earth take a look at the Big Island. Very, very scary as all the island is is one giant volcano.
I hope both of your parents are ok. It's got to be scary to be on vacation and not have any power. At least they are in the U.S. and not on some island like Jamaica or Haiti.