If I set my sky & water setting WL's for the region, will other people see it...

[Kylie Jaxxon]

if they do not have that particular environment setting in their viewer?

 

ETA:  Thank you, just wanted to double check :P

[Rolig Loon]

If you create special Windlight settings for your region, anyone visiting will see the region as you have designed it as long as they have not changed the default option in World >>> Environment Editor >>> Environment Settings from Use Region Settings.