If I went to a big hotel in Maui could I just use the pool?

Yes I tried this before. I was staying at a hotel next to the Grand Wailea and OMG I wish we would have stayed there instead. We went to go to the pool there and they want everyone to wear a wristband. When we said we would pay to use the pool they said you can only use the pool if you are a hotel guest and we would have to buy a room. Lesson learned, stay at the Grand Wailea next time we are in Maui! lol. The pool is supposed to be one of the best in the world.