Hey my wife and I are going this weekend, we have heard the same thing about the towels, so we are bringing a couple of our own to use for reserving at pool/beach.
The majority of the few complaints I'ves seen involve people NOT in the Royal Club (which we are in) and people traveling with young kids. Food reviews are pretty subjective so unless they kill someone with the buffett I am not concerned.
We are not worried and neither should you, it's Aruba