I am sure I took a univeral adapter when I did this tour, but I can't remember if I used it!!!!, so might be worth taking one to be on the safe side.
They do spray the rooms late afternoon with some stuff, I never got bitten at the Ashnil, but got eaten to death at the 2nd hotel, it was a nightmare, but they love me, I did spray the room again myself, I did spray myself from head to toe, and I was under the mossy nets for sleep.
Cindy