Dry mouth, sore throat, getting up frequently to urinate are all familiar to me since finishing treatment. Before diagnosis, I slept all through the night. The dry mouth and need to urinate are a vicious cycle; you wake up to drink water every hour or so which creates the need to pee. It's probably from mouth breathing and the Breathe Right strips solved that problem for me.
As to the sore throat, my ENT sent me for an endoscopy on the chance it could be chronic reflux. Remember, we've lost a lot of the digestive powers of saliva, instead we're drinking water (or other liquids) to get food down. Our digestion is not normal. Anyway, in my case, the endoscopy showed no problem with reflux. The doc prescribed Protonix as needed for the burning and churning.
A humidifier in addition to the Breathe Right strips will help also.