On my vacation in Houston, I took the Galaxy S5 in the pool with me 10/15 days I was there. I loved relaxing and swimming with the phone. Browsing the web in the pool was much better than on the couch.
I took tons of underwater videos with the family in 4K, and we had a blast watching them. (I know, I know, "It's not meant for that! It's water resistant, not waterproof!") It works perfectly as long as you make sure everything is shut tight.
You could say I've grown accustomed to it, and its a major letdown that I wouldn't be able to take the Note 4 in with me.