Some question about guilds

When guilds want only UAS/UAX people what do they mean?
(I know what UAS stands for; unlock all skills, but when they say that, do they want you to unlock all the skills using your PvP character?)
Why do most guilds require a 16+ member only? (Maturity is obvious, but what else?)
What happens at the end of the guild season and your guild is one of the top 6?

Post more questions later.

UAX means unlock all skills (like UAS) but also all runes/weapon upgrades etc. No guild will demand perfect UAX though because there are some skills/upgrades you will just never use ^^ (flourish anyone?). It doesn't matter how you unlock them, whether it's through buying/ID-ing/capping with a pve char or unlocking with faction on a PvP char, so long as you've got them available to you in some way.

The 16+ thing is, as you say, maturity but also, A-Net specifiy a minimum age of 16 for anyone going to their tournaments and stuff and if a guild is planning to be successful enough to be part of all that then they can't rely on members who are under 16 and then couldn't come.

I dunno about the top 6 but the top 16 at the end of each of these mini-seasons compete in playoffs (you might have seen it on observer mode recently?) and then the winner gets a shiny cape outline and a place in the final-of-finals at some point in some place (i'm a bit hazy here, lol. But that's the general idea).

Where do they compete for tournaments/playoffs?

*bump*

try this link: Guild Wars Official Site

it tells all about it.