Hi Camalos - pretty sure you’ve just described our guild and a lot of our guild members (in fact you may bring the average age down a little bit lol).
Dark Wolves is a Horde guild on the joint realms of Lightbringer/Mazrigos. This means that both those realms operate as if they were one but you have twice as many opportunities to get the character names you want 
We’re a social/casual raiding guild that only accepts applications from people 18 or older. We don’t do Mythic raiding (or at least … we might nip in at the end of an expansion, if we’re bored, but it’s not the aim).
We currently raid regularly twice a week, Wednesday and Friday from 9.30pm to midnight server time - and there are occasionally additional raids added as well - either transmog runs, achievement runs or just additional social/casual runs for alts (currently we often have one organised on a Sunday afternoon/early evening).
Our guild members are from all over Europe, most of them have plenty going on irl as well - families, responsibilities, jobs, studies etc.
We play to explore all aspects of WoW in a safe, friendly, non-judgemental environment.
A lot of guild members do not raid, or only raid occasionally - a lot of guild members have alts (some guild members have a LOT of alts!).
Raiding is done via a first-come first-served system on the calendar in-game - events go up, you sign up if you fulfil the requirements (ie, gear levels, ability to actually be there, etc), and we accept as many as we can. Currently we usually manage to get a space in a raid for everyone who wants to come (advantage of flexible raiding!).
We are looking for additional tanks - ideally those who don’t mind occasionally filling either a healer or a dps spot - but we’re happy to accept any role and we have enough raiders with enough alts that we can usually work around any member preferences.
We do use Teamspeak for voice comms during raids … and we have a discord channel that people use for voice comms occasionally during dungeon runs, however, voice chat is not used regularly, and certainly not as a replacement for general guild chat. We do require that people are in Teamspeak when we raid … but there is no requirement to speak, just so long as you can hear us. And we know that there are a lot of voices sometimes, with different accents, and sometimes they’re just really hard to understand, so happy to confirm anything via raid text chat too if needed.
If you want to check us out in more detail, you can join our discord channel: https://discord.gg/wWJJ83b
Our guild profile on the Armories: http://eu.battle.net/wow/en/guild/lightbringer/Dark_Wolves/
Our Realm advert: [H] <Dark Wolves> Social & Casual Raiding Guild (18+)
And our website: http://www.darkwolves.eu
You’re welcome to ask any questions and if you fancy giving us a go, feel free to apply by filling in the application on our website 