Wow, thanks for all of the great advice guys. I still don't' really know what to do...I have my plane ticket booked and everything. On one hand, this is my only vacation of the year, and I don't want an unstable situation like this to be in the back of my mind the whole time...I want to experience a new culture, see some sights, eat some exotic food. On the other hand if I cancel, I feel like I'm cheating myself out of the vacation I have been looking forward to for ages.
I guess I'll just keep monitoring the news for now and plan accordingly. Apparently a referendum has been set for the beginning of October (when I'm supposed to be there), which could make things better or a whole lot worse.
On the topic of travel warnings:
One of the options I'm looking at is simply changing my holiday to go to Laos and Cambodia. However the Canadian government's information on that region makes it sound a whole hell of a lot more dangerous than Thailand at the moment! Thoughts?