My 360 has survived 3 times of 3RoD. I think all of them due to the unstable voltage in the house. Though for Hotels it shouldn't be a problem. But then again it does sound like what happened to my 360 when it went 3RoD.

I really don't think playing HD has any affect on 3RoD likelyness or whatever. Lots of people here play on HD and most of them are fine