jim pelech wrote:what's the etiquette about peeing above the treeline?
It sounds like you've gotten more advice than you ever wanted about this issue! LOL It can be hard to find solitude on Grays, but usually even on the busiest of 14ers there's a rock formation or ridgeline you can duck behind (it's been many years since I did Grays, so my memory is fading on this particular peak). Generally speaking, you just want to make sure you're off the trail... If someone happens to come across you, most are very considerate and understanding.
As for kids, mine are usually more self-conscious about urinating in public than I am. I just try to help them find the most out-of-the-way spot as possible. As long as they're not peeing right on the trail, no one else it going to care.