Yes. You will find most US cities charging this fee now,I thought the UK was good at taxes for BS.
I don't recall but they do have a very helpful desk and one phone call should answer your problem.
Yes. I think 17 dollars a day
Yes, 18 a day,
There is a transient fee, $18 a day resort fee and they also charge $25 a day to park your car.
Get an answer from Aqua Palms Waikiki staff and past guests.