I have them, Its my baby! When i went to Greece last year i did *try* to straighten my hair however it was so hot i couldn't do it properly because of the heat. I also found my hair was getting damaged from the sun/greek heat so i didn't want to damage it futher by straightening it there.
I hope this is relevent but As for plug adapters it shouldn't be too hard depening on where it is you're going, You should be able to find one that will fit.