I think if all you want to do is say: "hey man, this is a pretty tight area for all of us and there are some things that can ruin it for everyone. With that said, I want you to know about A, B & C issues that can make it a bad hunt for all of us, so please entertain me so that we all hopefully have a good hunt..."
Nothing wrong with that in my opinion.
Was up camping in Rimrock unit a few weeks ago just to relax with some old friends and came to a great camping spot with three very large tents and nothing else. It was obviously an elk camp waiting for the season. We contemplated sleeping in their tents and using the site but decided to just move on!